diff --git a/CHANGELOG.md b/CHANGELOG.md
index 40d67b7378..27b6115bdf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@
 
 No user facing changes.
 
+## 1.0.15 - 22 Sep 2021
+
+- Update default CodeQL bundle version to 2.6.3. [#761](https://github.com/github/codeql-action/pull/761)
+
 ## 1.0.16 - 05 Oct 2021
 
 No user facing changes.
diff --git a/lib/defaults.json b/lib/defaults.json
index bfc2ccfb73..02902fe327 100644
--- a/lib/defaults.json
+++ b/lib/defaults.json
@@ -1,3 +1,3 @@
 {
-    "bundleVersion": "codeql-bundle-20210921"
+    "bundleVersion": "codeql-bundle-20211005"
 }
diff --git a/src/defaults.json b/src/defaults.json
index a1e0205fb8..9fb9ab85ac 100644
--- a/src/defaults.json
+++ b/src/defaults.json
@@ -1,3 +1,3 @@
 {
-  "bundleVersion": "codeql-bundle-20210921"
+  "bundleVersion": "codeql-bundle-20211005"
 }