diff --git a/lib/prism/debug.rb b/lib/prism/debug.rb
index 34e0c43f49..bd2eb0842b 100644
--- a/lib/prism/debug.rb
+++ b/lib/prism/debug.rb
@@ -114,8 +114,8 @@ module Prism
                   AnonymousLocal
                 end
               end,
-              *params.keywords.select { |kw| kw.is_a? OptionalKeywordParameterNode }.map(&:name),
-              *params.keywords.select { |kw| kw.is_a? RequiredKeywordParameterNode }.map(&:name),
+              *params.keywords.grep(RequiredKeywordParameterNode).map(&:name),
+              *params.keywords.grep(OptionalKeywordParameterNode).map(&:name),
             ]
 
             sorted << AnonymousLocal if params.keywords.any?
diff --git a/prism/config.yml b/prism/config.yml
index 9e0b25553e..3446e277bc 100644
--- a/prism/config.yml
+++ b/prism/config.yml
@@ -1985,11 +1985,13 @@ nodes:
         type: constant
       - name: name_loc
         type: location
+      - name: value
+        type: node
     comment: |
       Represents an optional keyword parameter to a method, block, or lambda definition.
 
-          def a(b: )
-                ^^
+          def a(b: 1)
+                ^^^^
           end
   - name: OptionalParameterNode
     fields:
@@ -2184,13 +2186,11 @@ nodes:
         type: constant
       - name: name_loc
         type: location
-      - name: value
-        type: node
     comment: |
       Represents a required keyword parameter to a method, block, or lambda definition.
 
-          def a(b: 1)
-                ^^^^
+          def a(b: )
+                ^^
           end
   - name: RequiredParameterNode
     fields:
diff --git a/prism/prism.c b/prism/prism.c
index 4dda06aedc..e663931477 100644
--- a/prism/prism.c
+++ b/prism/prism.c
@@ -3326,14 +3326,14 @@ pm_keyword_hash_node_elements_append(pm_keyword_hash_node_t *hash, pm_node_t *el
     hash->base.location.end = element->location.end;
 }
 
-// Allocate a new OptionalKeywordParameterNode node.
-static pm_optional_keyword_parameter_node_t *
-pm_optional_keyword_parameter_node_create(pm_parser_t *parser, const pm_token_t *name) {
-    pm_optional_keyword_parameter_node_t *node = PM_ALLOC_NODE(parser, pm_optional_keyword_parameter_node_t);
+// Allocate a new RequiredKeywordParameterNode node.
+static pm_required_keyword_parameter_node_t *
+pm_required_keyword_parameter_node_create(pm_parser_t *parser, const pm_token_t *name) {
+    pm_required_keyword_parameter_node_t *node = PM_ALLOC_NODE(parser, pm_required_keyword_parameter_node_t);
 
-    *node = (pm_optional_keyword_parameter_node_t) {
+    *node = (pm_required_keyword_parameter_node_t) {
         {
-            .type = PM_OPTIONAL_KEYWORD_PARAMETER_NODE,
+            .type = PM_REQUIRED_KEYWORD_PARAMETER_NODE,
             .location = {
                 .start = name->start,
                 .end = name->end
@@ -3346,14 +3346,14 @@ pm_optional_keyword_parameter_node_create(pm_parser_t *parser, const pm_token_t
     return node;
 }
 
-// Allocate a new RequiredKeywordParameterNode node.
-static pm_required_keyword_parameter_node_t *
-pm_required_keyword_parameter_node_create(pm_parser_t *parser, const pm_token_t *name, pm_node_t *value) {
-    pm_required_keyword_parameter_node_t *node = PM_ALLOC_NODE(parser, pm_required_keyword_parameter_node_t);
+// Allocate a new OptionalKeywordParameterNode node.
+static pm_optional_keyword_parameter_node_t *
+pm_optional_keyword_parameter_node_create(pm_parser_t *parser, const pm_token_t *name, pm_node_t *value) {
+    pm_optional_keyword_parameter_node_t *node = PM_ALLOC_NODE(parser, pm_optional_keyword_parameter_node_t);
 
-    *node = (pm_required_keyword_parameter_node_t) {
+    *node = (pm_optional_keyword_parameter_node_t) {
         {
-            .type = PM_REQUIRED_KEYWORD_PARAMETER_NODE,
+            .type = PM_OPTIONAL_KEYWORD_PARAMETER_NODE,
             .location = {
                 .start = name->start,
                 .end = value->location.end
@@ -10502,7 +10502,7 @@ parse_parameters(
                     case PM_TOKEN_COMMA:
                     case PM_TOKEN_PARENTHESIS_RIGHT:
                     case PM_TOKEN_PIPE: {
-                        pm_node_t *param = (pm_node_t *) pm_optional_keyword_parameter_node_create(parser, &name);
+                        pm_node_t *param = (pm_node_t *) pm_required_keyword_parameter_node_create(parser, &name);
                         pm_parameters_node_keywords_append(params, param);
                         break;
                     }
@@ -10513,7 +10513,7 @@ parse_parameters(
                             break;
                         }
 
-                        pm_node_t *param = (pm_node_t *) pm_optional_keyword_parameter_node_create(parser, &name);
+                        pm_node_t *param = (pm_node_t *) pm_required_keyword_parameter_node_create(parser, &name);
                         pm_parameters_node_keywords_append(params, param);
                         break;
                     }
@@ -10524,10 +10524,10 @@ parse_parameters(
                             context_push(parser, PM_CONTEXT_DEFAULT_PARAMS);
                             pm_node_t *value = parse_expression(parser, binding_power, PM_ERR_PARAMETER_NO_DEFAULT_KW);
                             context_pop(parser);
-                            param = (pm_node_t *) pm_required_keyword_parameter_node_create(parser, &name, value);
+                            param = (pm_node_t *) pm_optional_keyword_parameter_node_create(parser, &name, value);
                         }
                         else {
-                            param = (pm_node_t *) pm_optional_keyword_parameter_node_create(parser, &name);
+                            param = (pm_node_t *) pm_required_keyword_parameter_node_create(parser, &name);
                         }
 
                         pm_parameters_node_keywords_append(params, param);
diff --git a/test/prism/errors_test.rb b/test/prism/errors_test.rb
index 604311abe4..726bb14303 100644
--- a/test/prism/errors_test.rb
+++ b/test/prism/errors_test.rb
@@ -746,7 +746,7 @@ module Prism
           [],
           nil,
           [RequiredParameterNode(:a)],
-          [OptionalKeywordParameterNode(:b, Location())],
+          [RequiredKeywordParameterNode(:b, Location())],
           nil,
           nil
         ),
@@ -774,7 +774,7 @@ module Prism
           [],
           nil,
           [],
-          [OptionalKeywordParameterNode(:b, Location())],
+          [RequiredKeywordParameterNode(:b, Location())],
           KeywordRestParameterNode(:rest, Location(), Location()),
           nil
         ),
@@ -824,7 +824,7 @@ module Prism
           [],
           nil,
           [RequiredParameterNode(:a)],
-          [OptionalKeywordParameterNode(:b, Location())],
+          [RequiredKeywordParameterNode(:b, Location())],
           KeywordRestParameterNode(:args, Location(), Location()),
           nil
         ),
@@ -854,7 +854,7 @@ module Prism
           [],
           nil,
           [RequiredParameterNode(:a)],
-          [OptionalKeywordParameterNode(:b, Location())],
+          [RequiredKeywordParameterNode(:b, Location())],
           KeywordRestParameterNode(:args, Location(), Location()),
           nil
         ),
@@ -884,7 +884,7 @@ module Prism
           [],
           nil,
           [RequiredParameterNode(:a)],
-          [OptionalKeywordParameterNode(:b, Location())],
+          [RequiredKeywordParameterNode(:b, Location())],
           KeywordRestParameterNode(:args, Location(), Location()),
           nil
         ),
diff --git a/test/prism/location_test.rb b/test/prism/location_test.rb
index aa130abd5f..363e96fae8 100644
--- a/test/prism/location_test.rb
+++ b/test/prism/location_test.rb
@@ -600,7 +600,7 @@ module Prism
     end
 
     def test_OptionalKeywordParameterNode
-      assert_location(OptionalKeywordParameterNode, "def foo(bar:); end", 8...12) do |node|
+      assert_location(OptionalKeywordParameterNode, "def foo(bar: nil); end", 8...16) do |node|
         node.parameters.keywords.first
       end
     end
@@ -670,7 +670,7 @@ module Prism
     end
 
     def test_RequiredKeywordParameterNode
-      assert_location(RequiredKeywordParameterNode, "def foo(bar: nil); end", 8...16) do |node|
+      assert_location(RequiredKeywordParameterNode, "def foo(bar:); end", 8...12) do |node|
         node.parameters.keywords.first
       end
     end
diff --git a/test/prism/snapshots/blocks.txt b/test/prism/snapshots/blocks.txt
index 0cf7f693de..9769e9e4e2 100644
--- a/test/prism/snapshots/blocks.txt
+++ b/test/prism/snapshots/blocks.txt
@@ -517,7 +517,7 @@
         │   │   │   │   ├── rest: ∅
         │   │   │   │   ├── posts: (length: 0)
         │   │   │   │   ├── keywords: (length: 1)
-        │   │   │   │   │   └── @ OptionalKeywordParameterNode (location: (33,17)-(33,19))
+        │   │   │   │   │   └── @ RequiredKeywordParameterNode (location: (33,17)-(33,19))
         │   │   │   │   │       ├── name: :z
         │   │   │   │   │       └── name_loc: (33,17)-(33,19) = "z:"
         │   │   │   │   ├── keyword_rest: ∅
@@ -695,13 +695,13 @@
         │   │   │       │   │   │   ├── rest: ∅
         │   │   │       │   │   │   ├── posts: (length: 0)
         │   │   │       │   │   │   ├── keywords: (length: 2)
-        │   │   │       │   │   │   │   ├── @ RequiredKeywordParameterNode (location: (49,2)-(49,6))
+        │   │   │       │   │   │   │   ├── @ OptionalKeywordParameterNode (location: (49,2)-(49,6))
         │   │   │       │   │   │   │   │   ├── name: :a
         │   │   │       │   │   │   │   │   ├── name_loc: (49,2)-(49,4) = "a:"
         │   │   │       │   │   │   │   │   └── value:
         │   │   │       │   │   │   │   │       @ IntegerNode (location: (49,5)-(49,6))
         │   │   │       │   │   │   │   │       └── flags: decimal
-        │   │   │       │   │   │   │   └── @ RequiredKeywordParameterNode (location: (50,2)-(50,6))
+        │   │   │       │   │   │   │   └── @ OptionalKeywordParameterNode (location: (50,2)-(50,6))
         │   │   │       │   │   │   │       ├── name: :b
         │   │   │       │   │   │   │       ├── name_loc: (50,2)-(50,4) = "b:"
         │   │   │       │   │   │   │       └── value:
diff --git a/test/prism/snapshots/lambda.txt b/test/prism/snapshots/lambda.txt
index c2442d546c..270594d714 100644
--- a/test/prism/snapshots/lambda.txt
+++ b/test/prism/snapshots/lambda.txt
@@ -39,7 +39,7 @@
         │   │   │   ├── rest: ∅
         │   │   │   ├── posts: (length: 0)
         │   │   │   ├── keywords: (length: 1)
-        │   │   │   │   └── @ RequiredKeywordParameterNode (location: (5,3)-(5,13))
+        │   │   │   │   └── @ OptionalKeywordParameterNode (location: (5,3)-(5,13))
         │   │   │   │       ├── name: :x
         │   │   │   │       ├── name_loc: (5,3)-(5,5) = "x:"
         │   │   │   │       └── value:
@@ -89,7 +89,7 @@
         │   │   │   ├── rest: ∅
         │   │   │   ├── posts: (length: 0)
         │   │   │   ├── keywords: (length: 1)
-        │   │   │   │   └── @ RequiredKeywordParameterNode (location: (7,3)-(7,11))
+        │   │   │   │   └── @ OptionalKeywordParameterNode (location: (7,3)-(7,11))
         │   │   │   │       ├── name: :a
         │   │   │   │       ├── name_loc: (7,3)-(7,5) = "a:"
         │   │   │   │       └── value:
@@ -173,7 +173,7 @@
             │   │   ├── rest: ∅
             │   │   ├── posts: (length: 0)
             │   │   ├── keywords: (length: 1)
-            │   │   │   └── @ RequiredKeywordParameterNode (location: (11,3)-(11,11))
+            │   │   │   └── @ OptionalKeywordParameterNode (location: (11,3)-(11,11))
             │   │   │       ├── name: :foo
             │   │   │       ├── name_loc: (11,3)-(11,7) = "foo:"
             │   │   │       └── value:
diff --git a/test/prism/snapshots/methods.txt b/test/prism/snapshots/methods.txt
index 69d1c0ecec..ebaeb839c1 100644
--- a/test/prism/snapshots/methods.txt
+++ b/test/prism/snapshots/methods.txt
@@ -260,7 +260,7 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 1)
-        │   │   │   └── @ OptionalKeywordParameterNode (location: (31,6)-(31,8))
+        │   │   │   └── @ RequiredKeywordParameterNode (location: (31,6)-(31,8))
         │   │   │       ├── name: :b
         │   │   │       └── name_loc: (31,6)-(31,8) = "b:"
         │   │   ├── keyword_rest: ∅
@@ -290,7 +290,7 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 1)
-        │   │   │   └── @ OptionalKeywordParameterNode (location: (35,6)-(35,8))
+        │   │   │   └── @ RequiredKeywordParameterNode (location: (35,6)-(35,8))
         │   │   │       ├── name: :b
         │   │   │       └── name_loc: (35,6)-(35,8) = "b:"
         │   │   ├── keyword_rest: ∅
@@ -426,10 +426,10 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 2)
-        │   │   │   ├── @ OptionalKeywordParameterNode (location: (53,6)-(53,8))
+        │   │   │   ├── @ RequiredKeywordParameterNode (location: (53,6)-(53,8))
         │   │   │   │   ├── name: :b
         │   │   │   │   └── name_loc: (53,6)-(53,8) = "b:"
-        │   │   │   └── @ RequiredKeywordParameterNode (location: (53,10)-(53,14))
+        │   │   │   └── @ OptionalKeywordParameterNode (location: (53,10)-(53,14))
         │   │   │       ├── name: :c
         │   │   │       ├── name_loc: (53,10)-(53,12) = "c:"
         │   │   │       └── value:
@@ -456,10 +456,10 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 2)
-        │   │   │   ├── @ OptionalKeywordParameterNode (location: (56,6)-(56,8))
+        │   │   │   ├── @ RequiredKeywordParameterNode (location: (56,6)-(56,8))
         │   │   │   │   ├── name: :b
         │   │   │   │   └── name_loc: (56,6)-(56,8) = "b:"
-        │   │   │   └── @ RequiredKeywordParameterNode (location: (56,10)-(56,14))
+        │   │   │   └── @ OptionalKeywordParameterNode (location: (56,10)-(56,14))
         │   │   │       ├── name: :c
         │   │   │       ├── name_loc: (56,10)-(56,12) = "c:"
         │   │   │       └── value:
@@ -486,13 +486,13 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 2)
-        │   │   │   ├── @ RequiredKeywordParameterNode (location: (59,6)-(60,3))
+        │   │   │   ├── @ OptionalKeywordParameterNode (location: (59,6)-(60,3))
         │   │   │   │   ├── name: :b
         │   │   │   │   ├── name_loc: (59,6)-(59,8) = "b:"
         │   │   │   │   └── value:
         │   │   │   │       @ IntegerNode (location: (60,2)-(60,3))
         │   │   │   │       └── flags: decimal
-        │   │   │   └── @ OptionalKeywordParameterNode (location: (60,5)-(60,7))
+        │   │   │   └── @ RequiredKeywordParameterNode (location: (60,5)-(60,7))
         │   │   │       ├── name: :c
         │   │   │       └── name_loc: (60,5)-(60,7) = "c:"
         │   │   ├── keyword_rest: ∅
@@ -1307,7 +1307,7 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 1)
-        │   │   │   └── @ RequiredKeywordParameterNode (location: (142,8)-(142,19))
+        │   │   │   └── @ OptionalKeywordParameterNode (location: (142,8)-(142,19))
         │   │   │       ├── name: :a
         │   │   │       ├── name_loc: (142,8)-(142,10) = "a:"
         │   │   │       └── value:
@@ -1347,7 +1347,7 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 1)
-        │   │   │   └── @ RequiredKeywordParameterNode (location: (145,8)-(145,18))
+        │   │   │   └── @ OptionalKeywordParameterNode (location: (145,8)-(145,18))
         │   │   │       ├── name: :a
         │   │   │       ├── name_loc: (145,8)-(145,10) = "a:"
         │   │   │       └── value:
@@ -1385,7 +1385,7 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 1)
-        │   │   │   └── @ RequiredKeywordParameterNode (location: (148,8)-(148,17))
+        │   │   │   └── @ OptionalKeywordParameterNode (location: (148,8)-(148,17))
         │   │   │       ├── name: :a
         │   │   │       ├── name_loc: (148,8)-(148,10) = "a:"
         │   │   │       └── value:
diff --git a/test/prism/snapshots/procs.txt b/test/prism/snapshots/procs.txt
index d704add3ea..c29c39fede 100644
--- a/test/prism/snapshots/procs.txt
+++ b/test/prism/snapshots/procs.txt
@@ -144,10 +144,10 @@
         │   │   │   ├── rest: ∅
         │   │   │   ├── posts: (length: 0)
         │   │   │   ├── keywords: (length: 2)
-        │   │   │   │   ├── @ OptionalKeywordParameterNode (location: (17,13)-(17,15))
+        │   │   │   │   ├── @ RequiredKeywordParameterNode (location: (17,13)-(17,15))
         │   │   │   │   │   ├── name: :c
         │   │   │   │   │   └── name_loc: (17,13)-(17,15) = "c:"
-        │   │   │   │   └── @ OptionalKeywordParameterNode (location: (17,17)-(17,19))
+        │   │   │   │   └── @ RequiredKeywordParameterNode (location: (17,17)-(17,19))
         │   │   │   │       ├── name: :d
         │   │   │   │       └── name_loc: (17,17)-(17,19) = "d:"
         │   │   │   ├── keyword_rest: ∅
@@ -192,10 +192,10 @@
         │   │   │   │   └── operator_loc: (19,14)-(19,15) = "*"
         │   │   │   ├── posts: (length: 0)
         │   │   │   ├── keywords: (length: 2)
-        │   │   │   │   ├── @ OptionalKeywordParameterNode (location: (19,18)-(19,20))
+        │   │   │   │   ├── @ RequiredKeywordParameterNode (location: (19,18)-(19,20))
         │   │   │   │   │   ├── name: :d
         │   │   │   │   │   └── name_loc: (19,18)-(19,20) = "d:"
-        │   │   │   │   └── @ OptionalKeywordParameterNode (location: (19,22)-(19,24))
+        │   │   │   │   └── @ RequiredKeywordParameterNode (location: (19,22)-(19,24))
         │   │   │   │       ├── name: :e
         │   │   │   │       └── name_loc: (19,22)-(19,24) = "e:"
         │   │   │   ├── keyword_rest:
@@ -244,10 +244,10 @@
         │   │   │   │   └── operator_loc: (21,14)-(21,15) = "*"
         │   │   │   ├── posts: (length: 0)
         │   │   │   ├── keywords: (length: 2)
-        │   │   │   │   ├── @ OptionalKeywordParameterNode (location: (21,18)-(21,20))
+        │   │   │   │   ├── @ RequiredKeywordParameterNode (location: (21,18)-(21,20))
         │   │   │   │   │   ├── name: :d
         │   │   │   │   │   └── name_loc: (21,18)-(21,20) = "d:"
-        │   │   │   │   └── @ OptionalKeywordParameterNode (location: (21,22)-(21,24))
+        │   │   │   │   └── @ RequiredKeywordParameterNode (location: (21,22)-(21,24))
         │   │   │   │       ├── name: :e
         │   │   │   │       └── name_loc: (21,22)-(21,24) = "e:"
         │   │   │   ├── keyword_rest:
diff --git a/test/prism/snapshots/seattlerb/args_kw_block.txt b/test/prism/snapshots/seattlerb/args_kw_block.txt
index 13ea25095d..8d4bc2be38 100644
--- a/test/prism/snapshots/seattlerb/args_kw_block.txt
+++ b/test/prism/snapshots/seattlerb/args_kw_block.txt
@@ -14,7 +14,7 @@
             │   ├── rest: ∅
             │   ├── posts: (length: 0)
             │   ├── keywords: (length: 1)
-            │   │   └── @ RequiredKeywordParameterNode (location: (1,6)-(1,10))
+            │   │   └── @ OptionalKeywordParameterNode (location: (1,6)-(1,10))
             │   │       ├── name: :a
             │   │       ├── name_loc: (1,6)-(1,8) = "a:"
             │   │       └── value:
diff --git a/test/prism/snapshots/seattlerb/block_kw.txt b/test/prism/snapshots/seattlerb/block_kw.txt
index db136d2ae6..629a88080c 100644
--- a/test/prism/snapshots/seattlerb/block_kw.txt
+++ b/test/prism/snapshots/seattlerb/block_kw.txt
@@ -22,7 +22,7 @@
             │   │   │   ├── rest: ∅
             │   │   │   ├── posts: (length: 0)
             │   │   │   ├── keywords: (length: 1)
-            │   │   │   │   └── @ RequiredKeywordParameterNode (location: (1,8)-(1,12))
+            │   │   │   │   └── @ OptionalKeywordParameterNode (location: (1,8)-(1,12))
             │   │   │   │       ├── name: :k
             │   │   │   │       ├── name_loc: (1,8)-(1,10) = "k:"
             │   │   │   │       └── value:
diff --git a/test/prism/snapshots/seattlerb/block_kw__required.txt b/test/prism/snapshots/seattlerb/block_kw__required.txt
index 7fdd0c4e1e..10ae4f5afb 100644
--- a/test/prism/snapshots/seattlerb/block_kw__required.txt
+++ b/test/prism/snapshots/seattlerb/block_kw__required.txt
@@ -22,7 +22,7 @@
             │   │   │   ├── rest: ∅
             │   │   │   ├── posts: (length: 0)
             │   │   │   ├── keywords: (length: 1)
-            │   │   │   │   └── @ OptionalKeywordParameterNode (location: (1,9)-(1,11))
+            │   │   │   │   └── @ RequiredKeywordParameterNode (location: (1,9)-(1,11))
             │   │   │   │       ├── name: :k
             │   │   │   │       └── name_loc: (1,9)-(1,11) = "k:"
             │   │   │   ├── keyword_rest: ∅
diff --git a/test/prism/snapshots/seattlerb/block_kwarg_lvar.txt b/test/prism/snapshots/seattlerb/block_kwarg_lvar.txt
index d574e83dea..8325437072 100644
--- a/test/prism/snapshots/seattlerb/block_kwarg_lvar.txt
+++ b/test/prism/snapshots/seattlerb/block_kwarg_lvar.txt
@@ -22,7 +22,7 @@
             │   │   │   ├── rest: ∅
             │   │   │   ├── posts: (length: 0)
             │   │   │   ├── keywords: (length: 1)
-            │   │   │   │   └── @ RequiredKeywordParameterNode (location: (1,6)-(1,14))
+            │   │   │   │   └── @ OptionalKeywordParameterNode (location: (1,6)-(1,14))
             │   │   │   │       ├── name: :kw
             │   │   │   │       ├── name_loc: (1,6)-(1,9) = "kw:"
             │   │   │   │       └── value:
diff --git a/test/prism/snapshots/seattlerb/block_kwarg_lvar_multiple.txt b/test/prism/snapshots/seattlerb/block_kwarg_lvar_multiple.txt
index 10814a2bbc..9c9d0853ff 100644
--- a/test/prism/snapshots/seattlerb/block_kwarg_lvar_multiple.txt
+++ b/test/prism/snapshots/seattlerb/block_kwarg_lvar_multiple.txt
@@ -22,7 +22,7 @@
             │   │   │   ├── rest: ∅
             │   │   │   ├── posts: (length: 0)
             │   │   │   ├── keywords: (length: 2)
-            │   │   │   │   ├── @ RequiredKeywordParameterNode (location: (1,6)-(1,14))
+            │   │   │   │   ├── @ OptionalKeywordParameterNode (location: (1,6)-(1,14))
             │   │   │   │   │   ├── name: :kw
             │   │   │   │   │   ├── name_loc: (1,6)-(1,9) = "kw:"
             │   │   │   │   │   └── value:
@@ -31,7 +31,7 @@
             │   │   │   │   │       ├── value_loc: (1,11)-(1,14) = "val"
             │   │   │   │   │       ├── closing_loc: ∅
             │   │   │   │   │       └── unescaped: "val"
-            │   │   │   │   └── @ RequiredKeywordParameterNode (location: (1,16)-(1,26))
+            │   │   │   │   └── @ OptionalKeywordParameterNode (location: (1,16)-(1,26))
             │   │   │   │       ├── name: :kw2
             │   │   │   │       ├── name_loc: (1,16)-(1,20) = "kw2:"
             │   │   │   │       └── value:
diff --git a/test/prism/snapshots/seattlerb/defn_kwarg_kwarg.txt b/test/prism/snapshots/seattlerb/defn_kwarg_kwarg.txt
index 7ec17b6f09..4ca746c224 100644
--- a/test/prism/snapshots/seattlerb/defn_kwarg_kwarg.txt
+++ b/test/prism/snapshots/seattlerb/defn_kwarg_kwarg.txt
@@ -16,13 +16,13 @@
             │   ├── rest: ∅
             │   ├── posts: (length: 0)
             │   ├── keywords: (length: 2)
-            │   │   ├── @ RequiredKeywordParameterNode (location: (1,9)-(1,13))
+            │   │   ├── @ OptionalKeywordParameterNode (location: (1,9)-(1,13))
             │   │   │   ├── name: :b
             │   │   │   ├── name_loc: (1,9)-(1,11) = "b:"
             │   │   │   └── value:
             │   │   │       @ IntegerNode (location: (1,12)-(1,13))
             │   │   │       └── flags: decimal
-            │   │   └── @ RequiredKeywordParameterNode (location: (1,15)-(1,19))
+            │   │   └── @ OptionalKeywordParameterNode (location: (1,15)-(1,19))
             │   │       ├── name: :c
             │   │       ├── name_loc: (1,15)-(1,17) = "c:"
             │   │       └── value:
diff --git a/test/prism/snapshots/seattlerb/defn_kwarg_kwsplat.txt b/test/prism/snapshots/seattlerb/defn_kwarg_kwsplat.txt
index b27e177824..5356f73143 100644
--- a/test/prism/snapshots/seattlerb/defn_kwarg_kwsplat.txt
+++ b/test/prism/snapshots/seattlerb/defn_kwarg_kwsplat.txt
@@ -14,7 +14,7 @@
             │   ├── rest: ∅
             │   ├── posts: (length: 0)
             │   ├── keywords: (length: 1)
-            │   │   └── @ RequiredKeywordParameterNode (location: (1,6)-(1,10))
+            │   │   └── @ OptionalKeywordParameterNode (location: (1,6)-(1,10))
             │   │       ├── name: :b
             │   │       ├── name_loc: (1,6)-(1,8) = "b:"
             │   │       └── value:
diff --git a/test/prism/snapshots/seattlerb/defn_kwarg_kwsplat_anon.txt b/test/prism/snapshots/seattlerb/defn_kwarg_kwsplat_anon.txt
index cfb8d3487f..4ccf1907f9 100644
--- a/test/prism/snapshots/seattlerb/defn_kwarg_kwsplat_anon.txt
+++ b/test/prism/snapshots/seattlerb/defn_kwarg_kwsplat_anon.txt
@@ -14,7 +14,7 @@
             │   ├── rest: ∅
             │   ├── posts: (length: 0)
             │   ├── keywords: (length: 1)
-            │   │   └── @ RequiredKeywordParameterNode (location: (1,6)-(1,10))
+            │   │   └── @ OptionalKeywordParameterNode (location: (1,6)-(1,10))
             │   │       ├── name: :b
             │   │       ├── name_loc: (1,6)-(1,8) = "b:"
             │   │       └── value:
diff --git a/test/prism/snapshots/seattlerb/defn_kwarg_lvar.txt b/test/prism/snapshots/seattlerb/defn_kwarg_lvar.txt
index 8af8ac4726..435c2f224c 100644
--- a/test/prism/snapshots/seattlerb/defn_kwarg_lvar.txt
+++ b/test/prism/snapshots/seattlerb/defn_kwarg_lvar.txt
@@ -14,7 +14,7 @@
             │   ├── rest: ∅
             │   ├── posts: (length: 0)
             │   ├── keywords: (length: 1)
-            │   │   └── @ RequiredKeywordParameterNode (location: (1,8)-(1,16))
+            │   │   └── @ OptionalKeywordParameterNode (location: (1,8)-(1,16))
             │   │       ├── name: :kw
             │   │       ├── name_loc: (1,8)-(1,11) = "kw:"
             │   │       └── value:
diff --git a/test/prism/snapshots/seattlerb/defn_kwarg_no_parens.txt b/test/prism/snapshots/seattlerb/defn_kwarg_no_parens.txt
index 3a5b9cd22a..6905bd1973 100644
--- a/test/prism/snapshots/seattlerb/defn_kwarg_no_parens.txt
+++ b/test/prism/snapshots/seattlerb/defn_kwarg_no_parens.txt
@@ -14,7 +14,7 @@
             │   ├── rest: ∅
             │   ├── posts: (length: 0)
             │   ├── keywords: (length: 1)
-            │   │   └── @ RequiredKeywordParameterNode (location: (1,6)-(1,10))
+            │   │   └── @ OptionalKeywordParameterNode (location: (1,6)-(1,10))
             │   │       ├── name: :a
             │   │       ├── name_loc: (1,6)-(1,8) = "a:"
             │   │       └── value:
diff --git a/test/prism/snapshots/seattlerb/defn_kwarg_val.txt b/test/prism/snapshots/seattlerb/defn_kwarg_val.txt
index 3ed748a6e5..772c7b6224 100644
--- a/test/prism/snapshots/seattlerb/defn_kwarg_val.txt
+++ b/test/prism/snapshots/seattlerb/defn_kwarg_val.txt
@@ -16,7 +16,7 @@
             │   ├── rest: ∅
             │   ├── posts: (length: 0)
             │   ├── keywords: (length: 1)
-            │   │   └── @ RequiredKeywordParameterNode (location: (1,9)-(1,12))
+            │   │   └── @ OptionalKeywordParameterNode (location: (1,9)-(1,12))
             │   │       ├── name: :b
             │   │       ├── name_loc: (1,9)-(1,11) = "b:"
             │   │       └── value:
diff --git a/test/prism/snapshots/seattlerb/defs_kwarg.txt b/test/prism/snapshots/seattlerb/defs_kwarg.txt
index 55f39c5543..62571e863d 100644
--- a/test/prism/snapshots/seattlerb/defs_kwarg.txt
+++ b/test/prism/snapshots/seattlerb/defs_kwarg.txt
@@ -15,7 +15,7 @@
             │   ├── rest: ∅
             │   ├── posts: (length: 0)
             │   ├── keywords: (length: 1)
-            │   │   └── @ RequiredKeywordParameterNode (location: (1,11)-(1,15))
+            │   │   └── @ OptionalKeywordParameterNode (location: (1,11)-(1,15))
             │   │       ├── name: :b
             │   │       ├── name_loc: (1,11)-(1,13) = "b:"
             │   │       └── value:
diff --git a/test/prism/snapshots/seattlerb/f_kw.txt b/test/prism/snapshots/seattlerb/f_kw.txt
index 3c1e5aa3a6..435f5547b8 100644
--- a/test/prism/snapshots/seattlerb/f_kw.txt
+++ b/test/prism/snapshots/seattlerb/f_kw.txt
@@ -14,7 +14,7 @@
             │   ├── rest: ∅
             │   ├── posts: (length: 0)
             │   ├── keywords: (length: 1)
-            │   │   └── @ RequiredKeywordParameterNode (location: (1,6)-(1,10))
+            │   │   └── @ OptionalKeywordParameterNode (location: (1,6)-(1,10))
             │   │       ├── name: :k
             │   │       ├── name_loc: (1,6)-(1,8) = "k:"
             │   │       └── value:
diff --git a/test/prism/snapshots/seattlerb/f_kw__required.txt b/test/prism/snapshots/seattlerb/f_kw__required.txt
index f0375459a6..62a17289bd 100644
--- a/test/prism/snapshots/seattlerb/f_kw__required.txt
+++ b/test/prism/snapshots/seattlerb/f_kw__required.txt
@@ -14,7 +14,7 @@
             │   ├── rest: ∅
             │   ├── posts: (length: 0)
             │   ├── keywords: (length: 1)
-            │   │   └── @ OptionalKeywordParameterNode (location: (1,6)-(1,8))
+            │   │   └── @ RequiredKeywordParameterNode (location: (1,6)-(1,8))
             │   │       ├── name: :k
             │   │       └── name_loc: (1,6)-(1,8) = "k:"
             │   ├── keyword_rest: ∅
diff --git a/test/prism/snapshots/seattlerb/iter_kwarg.txt b/test/prism/snapshots/seattlerb/iter_kwarg.txt
index d8e65d6a08..e80e6b599a 100644
--- a/test/prism/snapshots/seattlerb/iter_kwarg.txt
+++ b/test/prism/snapshots/seattlerb/iter_kwarg.txt
@@ -22,7 +22,7 @@
             │   │   │   ├── rest: ∅
             │   │   │   ├── posts: (length: 0)
             │   │   │   ├── keywords: (length: 1)
-            │   │   │   │   └── @ RequiredKeywordParameterNode (location: (1,5)-(1,9))
+            │   │   │   │   └── @ OptionalKeywordParameterNode (location: (1,5)-(1,9))
             │   │   │   │       ├── name: :b
             │   │   │   │       ├── name_loc: (1,5)-(1,7) = "b:"
             │   │   │   │       └── value:
diff --git a/test/prism/snapshots/seattlerb/iter_kwarg_kwsplat.txt b/test/prism/snapshots/seattlerb/iter_kwarg_kwsplat.txt
index 5e72568951..bd910e7d40 100644
--- a/test/prism/snapshots/seattlerb/iter_kwarg_kwsplat.txt
+++ b/test/prism/snapshots/seattlerb/iter_kwarg_kwsplat.txt
@@ -22,7 +22,7 @@
             │   │   │   ├── rest: ∅
             │   │   │   ├── posts: (length: 0)
             │   │   │   ├── keywords: (length: 1)
-            │   │   │   │   └── @ RequiredKeywordParameterNode (location: (1,5)-(1,9))
+            │   │   │   │   └── @ OptionalKeywordParameterNode (location: (1,5)-(1,9))
             │   │   │   │       ├── name: :b
             │   │   │   │       ├── name_loc: (1,5)-(1,7) = "b:"
             │   │   │   │       └── value:
diff --git a/test/prism/snapshots/seattlerb/required_kwarg_no_value.txt b/test/prism/snapshots/seattlerb/required_kwarg_no_value.txt
index 167db3a475..8c62ac7882 100644
--- a/test/prism/snapshots/seattlerb/required_kwarg_no_value.txt
+++ b/test/prism/snapshots/seattlerb/required_kwarg_no_value.txt
@@ -14,10 +14,10 @@
             │   ├── rest: ∅
             │   ├── posts: (length: 0)
             │   ├── keywords: (length: 2)
-            │   │   ├── @ OptionalKeywordParameterNode (location: (1,6)-(1,8))
+            │   │   ├── @ RequiredKeywordParameterNode (location: (1,6)-(1,8))
             │   │   │   ├── name: :a
             │   │   │   └── name_loc: (1,6)-(1,8) = "a:"
-            │   │   └── @ OptionalKeywordParameterNode (location: (1,10)-(1,12))
+            │   │   └── @ RequiredKeywordParameterNode (location: (1,10)-(1,12))
             │   │       ├── name: :b
             │   │       └── name_loc: (1,10)-(1,12) = "b:"
             │   ├── keyword_rest: ∅
diff --git a/test/prism/snapshots/seattlerb/stabby_block_kw.txt b/test/prism/snapshots/seattlerb/stabby_block_kw.txt
index 1accc172de..fe95390a27 100644
--- a/test/prism/snapshots/seattlerb/stabby_block_kw.txt
+++ b/test/prism/snapshots/seattlerb/stabby_block_kw.txt
@@ -17,7 +17,7 @@
             │   │   ├── rest: ∅
             │   │   ├── posts: (length: 0)
             │   │   ├── keywords: (length: 1)
-            │   │   │   └── @ RequiredKeywordParameterNode (location: (1,4)-(1,8))
+            │   │   │   └── @ OptionalKeywordParameterNode (location: (1,4)-(1,8))
             │   │   │       ├── name: :k
             │   │   │       ├── name_loc: (1,4)-(1,6) = "k:"
             │   │   │       └── value:
diff --git a/test/prism/snapshots/seattlerb/stabby_block_kw__required.txt b/test/prism/snapshots/seattlerb/stabby_block_kw__required.txt
index 2754fa1b79..99a2e70586 100644
--- a/test/prism/snapshots/seattlerb/stabby_block_kw__required.txt
+++ b/test/prism/snapshots/seattlerb/stabby_block_kw__required.txt
@@ -17,7 +17,7 @@
             │   │   ├── rest: ∅
             │   │   ├── posts: (length: 0)
             │   │   ├── keywords: (length: 1)
-            │   │   │   └── @ OptionalKeywordParameterNode (location: (1,4)-(1,6))
+            │   │   │   └── @ RequiredKeywordParameterNode (location: (1,4)-(1,6))
             │   │   │       ├── name: :k
             │   │   │       └── name_loc: (1,4)-(1,6) = "k:"
             │   │   ├── keyword_rest: ∅
diff --git a/test/prism/snapshots/unparser/corpus/literal/def.txt b/test/prism/snapshots/unparser/corpus/literal/def.txt
index 837cd1d368..daafd10664 100644
--- a/test/prism/snapshots/unparser/corpus/literal/def.txt
+++ b/test/prism/snapshots/unparser/corpus/literal/def.txt
@@ -194,10 +194,10 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 2)
-        │   │   │   ├── @ OptionalKeywordParameterNode (location: (21,8)-(21,12))
+        │   │   │   ├── @ RequiredKeywordParameterNode (location: (21,8)-(21,12))
         │   │   │   │   ├── name: :bar
         │   │   │   │   └── name_loc: (21,8)-(21,12) = "bar:"
-        │   │   │   └── @ OptionalKeywordParameterNode (location: (21,14)-(21,18))
+        │   │   │   └── @ RequiredKeywordParameterNode (location: (21,14)-(21,18))
         │   │   │       ├── name: :baz
         │   │   │       └── name_loc: (21,14)-(21,18) = "baz:"
         │   │   ├── keyword_rest: ∅
@@ -627,7 +627,7 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 1)
-        │   │   │   └── @ RequiredKeywordParameterNode (location: (74,8)-(74,14))
+        │   │   │   └── @ OptionalKeywordParameterNode (location: (74,8)-(74,14))
         │   │   │       ├── name: :bar
         │   │   │       ├── name_loc: (74,8)-(74,12) = "bar:"
         │   │   │       └── value:
@@ -654,7 +654,7 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 1)
-        │   │   │   └── @ RequiredKeywordParameterNode (location: (77,8)-(77,16))
+        │   │   │   └── @ OptionalKeywordParameterNode (location: (77,8)-(77,16))
         │   │   │       ├── name: :bar
         │   │   │       ├── name_loc: (77,8)-(77,12) = "bar:"
         │   │   │       └── value:
@@ -689,7 +689,7 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 1)
-        │   │   │   └── @ RequiredKeywordParameterNode (location: (80,8)-(80,18))
+        │   │   │   └── @ OptionalKeywordParameterNode (location: (80,8)-(80,18))
         │   │   │       ├── name: :bar
         │   │   │       ├── name_loc: (80,8)-(80,12) = "bar:"
         │   │   │       └── value:
@@ -1090,10 +1090,10 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 2)
-        │   │   │   ├── @ OptionalKeywordParameterNode (location: (123,8)-(123,12))
+        │   │   │   ├── @ RequiredKeywordParameterNode (location: (123,8)-(123,12))
         │   │   │   │   ├── name: :bar
         │   │   │   │   └── name_loc: (123,8)-(123,12) = "bar:"
-        │   │   │   └── @ RequiredKeywordParameterNode (location: (123,14)-(123,26))
+        │   │   │   └── @ OptionalKeywordParameterNode (location: (123,14)-(123,26))
         │   │   │       ├── name: :baz
         │   │   │       ├── name_loc: (123,14)-(123,18) = "baz:"
         │   │   │       └── value:
diff --git a/test/prism/snapshots/whitequark/args.txt b/test/prism/snapshots/whitequark/args.txt
index bc9d42da70..5c593ddc7b 100644
--- a/test/prism/snapshots/whitequark/args.txt
+++ b/test/prism/snapshots/whitequark/args.txt
@@ -369,7 +369,7 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 1)
-        │   │   │   └── @ RequiredKeywordParameterNode (location: (23,7)-(23,13))
+        │   │   │   └── @ OptionalKeywordParameterNode (location: (23,7)-(23,13))
         │   │   │       ├── name: :foo
         │   │   │       ├── name_loc: (23,7)-(23,11) = "foo:"
         │   │   │       └── value:
@@ -400,13 +400,13 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 2)
-        │   │   │   ├── @ RequiredKeywordParameterNode (location: (25,7)-(25,13))
+        │   │   │   ├── @ OptionalKeywordParameterNode (location: (25,7)-(25,13))
         │   │   │   │   ├── name: :foo
         │   │   │   │   ├── name_loc: (25,7)-(25,11) = "foo:"
         │   │   │   │   └── value:
         │   │   │   │       @ IntegerNode (location: (25,12)-(25,13))
         │   │   │   │       └── flags: decimal
-        │   │   │   └── @ RequiredKeywordParameterNode (location: (25,15)-(25,21))
+        │   │   │   └── @ OptionalKeywordParameterNode (location: (25,15)-(25,21))
         │   │   │       ├── name: :bar
         │   │   │       ├── name_loc: (25,15)-(25,19) = "bar:"
         │   │   │       └── value:
@@ -811,7 +811,7 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 1)
-        │   │   │   └── @ OptionalKeywordParameterNode (location: (51,6)-(51,10))
+        │   │   │   └── @ RequiredKeywordParameterNode (location: (51,6)-(51,10))
         │   │   │       ├── name: :foo
         │   │   │       └── name_loc: (51,6)-(51,10) = "foo:"
         │   │   ├── keyword_rest: ∅
@@ -835,7 +835,7 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 1)
-        │   │   │   └── @ RequiredKeywordParameterNode (location: (54,6)-(54,13))
+        │   │   │   └── @ OptionalKeywordParameterNode (location: (54,6)-(54,13))
         │   │   │       ├── name: :foo
         │   │   │       ├── name_loc: (54,6)-(54,10) = "foo:"
         │   │   │       └── value:
diff --git a/test/prism/snapshots/whitequark/blockargs.txt b/test/prism/snapshots/whitequark/blockargs.txt
index 208e2bf333..ec0296813f 100644
--- a/test/prism/snapshots/whitequark/blockargs.txt
+++ b/test/prism/snapshots/whitequark/blockargs.txt
@@ -963,7 +963,7 @@
         │   │   │   │   ├── rest: ∅
         │   │   │   │   ├── posts: (length: 0)
         │   │   │   │   ├── keywords: (length: 1)
-        │   │   │   │   │   └── @ RequiredKeywordParameterNode (location: (57,4)-(57,10))
+        │   │   │   │   │   └── @ OptionalKeywordParameterNode (location: (57,4)-(57,10))
         │   │   │   │   │       ├── name: :foo
         │   │   │   │   │       ├── name_loc: (57,4)-(57,8) = "foo:"
         │   │   │   │   │       └── value:
@@ -1002,13 +1002,13 @@
         │   │   │   │   ├── rest: ∅
         │   │   │   │   ├── posts: (length: 0)
         │   │   │   │   ├── keywords: (length: 2)
-        │   │   │   │   │   ├── @ RequiredKeywordParameterNode (location: (59,4)-(59,10))
+        │   │   │   │   │   ├── @ OptionalKeywordParameterNode (location: (59,4)-(59,10))
         │   │   │   │   │   │   ├── name: :foo
         │   │   │   │   │   │   ├── name_loc: (59,4)-(59,8) = "foo:"
         │   │   │   │   │   │   └── value:
         │   │   │   │   │   │       @ IntegerNode (location: (59,9)-(59,10))
         │   │   │   │   │   │       └── flags: decimal
-        │   │   │   │   │   └── @ RequiredKeywordParameterNode (location: (59,12)-(59,18))
+        │   │   │   │   │   └── @ OptionalKeywordParameterNode (location: (59,12)-(59,18))
         │   │   │   │   │       ├── name: :bar
         │   │   │   │   │       ├── name_loc: (59,12)-(59,16) = "bar:"
         │   │   │   │   │       └── value:
@@ -1051,7 +1051,7 @@
         │   │   │   │   ├── rest: ∅
         │   │   │   │   ├── posts: (length: 0)
         │   │   │   │   ├── keywords: (length: 1)
-        │   │   │   │   │   └── @ OptionalKeywordParameterNode (location: (61,4)-(61,8))
+        │   │   │   │   │   └── @ RequiredKeywordParameterNode (location: (61,4)-(61,8))
         │   │   │   │   │       ├── name: :foo
         │   │   │   │   │       └── name_loc: (61,4)-(61,8) = "foo:"
         │   │   │   │   ├── keyword_rest: ∅
diff --git a/test/prism/snapshots/whitequark/kwarg.txt b/test/prism/snapshots/whitequark/kwarg.txt
index f0d8a921b4..7aef902fad 100644
--- a/test/prism/snapshots/whitequark/kwarg.txt
+++ b/test/prism/snapshots/whitequark/kwarg.txt
@@ -14,7 +14,7 @@
             │   ├── rest: ∅
             │   ├── posts: (length: 0)
             │   ├── keywords: (length: 1)
-            │   │   └── @ OptionalKeywordParameterNode (location: (1,6)-(1,10))
+            │   │   └── @ RequiredKeywordParameterNode (location: (1,6)-(1,10))
             │   │       ├── name: :foo
             │   │       └── name_loc: (1,6)-(1,10) = "foo:"
             │   ├── keyword_rest: ∅
diff --git a/test/prism/snapshots/whitequark/kwoptarg.txt b/test/prism/snapshots/whitequark/kwoptarg.txt
index 0b76202010..40f6d7e487 100644
--- a/test/prism/snapshots/whitequark/kwoptarg.txt
+++ b/test/prism/snapshots/whitequark/kwoptarg.txt
@@ -14,7 +14,7 @@
             │   ├── rest: ∅
             │   ├── posts: (length: 0)
             │   ├── keywords: (length: 1)
-            │   │   └── @ RequiredKeywordParameterNode (location: (1,6)-(1,12))
+            │   │   └── @ OptionalKeywordParameterNode (location: (1,6)-(1,12))
             │   │       ├── name: :foo
             │   │       ├── name_loc: (1,6)-(1,10) = "foo:"
             │   │       └── value:
diff --git a/test/prism/snapshots/whitequark/kwoptarg_with_kwrestarg_and_forwarded_args.txt b/test/prism/snapshots/whitequark/kwoptarg_with_kwrestarg_and_forwarded_args.txt
index 9b72a7f635..675c6f9300 100644
--- a/test/prism/snapshots/whitequark/kwoptarg_with_kwrestarg_and_forwarded_args.txt
+++ b/test/prism/snapshots/whitequark/kwoptarg_with_kwrestarg_and_forwarded_args.txt
@@ -14,7 +14,7 @@
             │   ├── rest: ∅
             │   ├── posts: (length: 0)
             │   ├── keywords: (length: 1)
-            │   │   └── @ RequiredKeywordParameterNode (location: (1,6)-(1,12))
+            │   │   └── @ OptionalKeywordParameterNode (location: (1,6)-(1,12))
             │   │       ├── name: :a
             │   │       ├── name_loc: (1,6)-(1,8) = "a:"
             │   │       └── value:
diff --git a/test/prism/snapshots/whitequark/ruby_bug_15789.txt b/test/prism/snapshots/whitequark/ruby_bug_15789.txt
index 788462b397..657eb764d9 100644
--- a/test/prism/snapshots/whitequark/ruby_bug_15789.txt
+++ b/test/prism/snapshots/whitequark/ruby_bug_15789.txt
@@ -80,7 +80,7 @@
             │   │       │   │   ├── rest: ∅
             │   │       │   │   ├── posts: (length: 0)
             │   │       │   │   ├── keywords: (length: 1)
-            │   │       │   │   │   └── @ RequiredKeywordParameterNode (location: (3,5)-(3,14))
+            │   │       │   │   │   └── @ OptionalKeywordParameterNode (location: (3,5)-(3,14))
             │   │       │   │   │       ├── name: :a
             │   │       │   │   │       ├── name_loc: (3,5)-(3,7) = "a:"
             │   │       │   │   │       └── value:
diff --git a/test/prism/snapshots/whitequark/ruby_bug_9669.txt b/test/prism/snapshots/whitequark/ruby_bug_9669.txt
index aa9f382a85..1ba582a1d9 100644
--- a/test/prism/snapshots/whitequark/ruby_bug_9669.txt
+++ b/test/prism/snapshots/whitequark/ruby_bug_9669.txt
@@ -14,7 +14,7 @@
         │   │   ├── rest: ∅
         │   │   ├── posts: (length: 0)
         │   │   ├── keywords: (length: 1)
-        │   │   │   └── @ OptionalKeywordParameterNode (location: (1,6)-(1,8))
+        │   │   │   └── @ RequiredKeywordParameterNode (location: (1,6)-(1,8))
         │   │   │       ├── name: :b
         │   │   │       └── name_loc: (1,6)-(1,8) = "b:"
         │   │   ├── keyword_rest: ∅
diff --git a/test/prism/snapshots/whitequark/send_lambda_args_noparen.txt b/test/prism/snapshots/whitequark/send_lambda_args_noparen.txt
index 47d863f157..913c9a9bb0 100644
--- a/test/prism/snapshots/whitequark/send_lambda_args_noparen.txt
+++ b/test/prism/snapshots/whitequark/send_lambda_args_noparen.txt
@@ -17,7 +17,7 @@
         │   │   │   ├── rest: ∅
         │   │   │   ├── posts: (length: 0)
         │   │   │   ├── keywords: (length: 1)
-        │   │   │   │   └── @ RequiredKeywordParameterNode (location: (1,3)-(1,7))
+        │   │   │   │   └── @ OptionalKeywordParameterNode (location: (1,3)-(1,7))
         │   │   │   │       ├── name: :a
         │   │   │   │       ├── name_loc: (1,3)-(1,5) = "a:"
         │   │   │   │       └── value:
@@ -43,7 +43,7 @@
             │   │   ├── rest: ∅
             │   │   ├── posts: (length: 0)
             │   │   ├── keywords: (length: 1)
-            │   │   │   └── @ OptionalKeywordParameterNode (location: (3,3)-(3,5))
+            │   │   │   └── @ RequiredKeywordParameterNode (location: (3,3)-(3,5))
             │   │   │       ├── name: :a
             │   │   │       └── name_loc: (3,3)-(3,5) = "a:"
             │   │   ├── keyword_rest: ∅