diff --git a/CHANGELOG.md b/CHANGELOG.md
index e1f6d4258..d7b658db6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,6 @@ Note that the only difference between `v2` and `v3` of the CodeQL Action is the
 ## [UNRELEASED]
 
 - We are rolling out a feature in May/June 2024 that will reduce the Actions cache usage of the Action by keeping only the newest TRAP cache for each language. [#2306](https://github.com/github/codeql-action/pull/2306)
-- Update default CodeQL bundle version to 2.17.4. [#2312](https://github.com/github/codeql-action/pull/2312)
 
 ## 3.25.6 - 20 May 2024
 
diff --git a/lib/defaults.json b/lib/defaults.json
index c4fbd7b39..a96dc10e5 100644
--- a/lib/defaults.json
+++ b/lib/defaults.json
@@ -1,6 +1,6 @@
 {
-    "bundleVersion": "codeql-bundle-v2.17.4",
-    "cliVersion": "2.17.4",
-    "priorBundleVersion": "codeql-bundle-v2.17.3",
-    "priorCliVersion": "2.17.3"
+    "bundleVersion": "codeql-bundle-v2.17.3",
+    "cliVersion": "2.17.3",
+    "priorBundleVersion": "codeql-bundle-v2.17.2",
+    "priorCliVersion": "2.17.2"
 }
diff --git a/src/defaults.json b/src/defaults.json
index 463a259e6..2f4eb0e6d 100644
--- a/src/defaults.json
+++ b/src/defaults.json
@@ -1,6 +1,6 @@
 {
-  "bundleVersion": "codeql-bundle-v2.17.4",
-  "cliVersion": "2.17.4",
-  "priorBundleVersion": "codeql-bundle-v2.17.3",
-  "priorCliVersion": "2.17.3"
+  "bundleVersion": "codeql-bundle-v2.17.3",
+  "cliVersion": "2.17.3",
+  "priorBundleVersion": "codeql-bundle-v2.17.2",
+  "priorCliVersion": "2.17.2"
 }