diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0bfe7828bc..26ba09793e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ## [UNRELEASED]
 
-No user facing changes.
+- Update default CodeQL bundle version to 2.12.4.
 
 ## 2.2.5 - 24 Feb 2023
 
diff --git a/lib/defaults.json b/lib/defaults.json
index dfce96ec2b..c06262b120 100644
--- a/lib/defaults.json
+++ b/lib/defaults.json
@@ -1,6 +1,6 @@
 {
-    "bundleVersion": "codeql-bundle-20230217",
-    "cliVersion": "2.12.3",
-    "priorBundleVersion": "codeql-bundle-20230207",
-    "priorCliVersion": "2.12.2"
+    "bundleVersion": "codeql-bundle-20230304",
+    "cliVersion": "2.12.4",
+    "priorBundleVersion": "codeql-bundle-20230217",
+    "priorCliVersion": "2.12.3"
 }
diff --git a/src/defaults.json b/src/defaults.json
index c679111533..be18a320d3 100644
--- a/src/defaults.json
+++ b/src/defaults.json
@@ -1,6 +1,6 @@
 {
-  "bundleVersion": "codeql-bundle-20230217",
-  "cliVersion": "2.12.3",
-  "priorBundleVersion": "codeql-bundle-20230207",
-  "priorCliVersion": "2.12.2"
+  "bundleVersion": "codeql-bundle-20230304",
+  "cliVersion": "2.12.4",
+  "priorBundleVersion": "codeql-bundle-20230217",
+  "priorCliVersion": "2.12.3"
 }