diff --git a/package.json b/package.json
index 4faa57ce..f516f573 100644
--- a/package.json
+++ b/package.json
@@ -17,9 +17,9 @@
   "license": "MPL-2.0",
   "dependencies": {
     "babel-plugin-transform-class-properties": "6.24.1",
-    "mozilla-normandy-action-argument-schemas": "0.3",
+    "mozilla-normandy-action-argument-schemas": "0.3.0",
     "node-uuid": "1.4.7",
-    "nsp": "^3.2.1"
+    "nsp": "3.2.1"
   },
   "devDependencies": {
     "ajv": "5.2.0",
diff --git a/yarn.lock b/yarn.lock
index 29cdb184..db1c499f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2968,7 +2968,7 @@ minimist@~0.0.1:
   dependencies:
     minimist "0.0.8"
 
-mozilla-normandy-action-argument-schemas@0.3:
+mozilla-normandy-action-argument-schemas@0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/mozilla-normandy-action-argument-schemas/-/mozilla-normandy-action-argument-schemas-0.3.0.tgz#c959858337343e201e0082313aa75625f337b7a6"
 
@@ -3117,7 +3117,7 @@ npmlog@^4.0.2:
     gauge "~2.7.3"
     set-blocking "~2.0.0"
 
-nsp@^3.2.1:
+nsp@3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/nsp/-/nsp-3.2.1.tgz#0f540f8e85851e4ad370b14d5001098046dedfd1"
   dependencies: