diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6abf9b2322..4359b1233d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@ See the [releases page](https://github.com/github/codeql-action/releases) for th
 
 ## [UNRELEASED]
 
+- Update default CodeQL bundle version to 2.15.0. [#1938](https://github.com/github/codeql-action/pull/1938)
 - Improve the log output when an error occurs in an invocation of the CodeQL CLI. [#1927](https://github.com/github/codeql-action/pull/1927)
 
 ## 2.22.1 - 09 Oct 2023
diff --git a/lib/defaults.json b/lib/defaults.json
index a593e19c3e..035833da85 100644
--- a/lib/defaults.json
+++ b/lib/defaults.json
@@ -1,6 +1,6 @@
 {
-    "bundleVersion": "codeql-bundle-v2.14.6",
-    "cliVersion": "2.14.6",
-    "priorBundleVersion": "codeql-bundle-v2.14.5",
-    "priorCliVersion": "2.14.5"
+    "bundleVersion": "codeql-bundle-v2.15.0",
+    "cliVersion": "2.15.0",
+    "priorBundleVersion": "codeql-bundle-v2.14.6",
+    "priorCliVersion": "2.14.6"
 }
diff --git a/src/defaults.json b/src/defaults.json
index 9b91e495cc..89b5f5faa0 100644
--- a/src/defaults.json
+++ b/src/defaults.json
@@ -1,6 +1,6 @@
 {
-  "bundleVersion": "codeql-bundle-v2.14.6",
-  "cliVersion": "2.14.6",
-  "priorBundleVersion": "codeql-bundle-v2.14.5",
-  "priorCliVersion": "2.14.5"
+  "bundleVersion": "codeql-bundle-v2.15.0",
+  "cliVersion": "2.15.0",
+  "priorBundleVersion": "codeql-bundle-v2.14.6",
+  "priorCliVersion": "2.14.6"
 }