diff --git a/CHANGELOG.md b/CHANGELOG.md
index fe2ad454bd..33954b2213 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ## [UNRELEASED]
 
-No user facing changes.
+- Update default CodeQL bundle version to 2.7.3. [#842](https://github.com/github/codeql-action/pull/842)
 
 ## 1.0.25 - 06 Dec 2021
 
diff --git a/lib/defaults.json b/lib/defaults.json
index 8bc3d422c3..d386d90b32 100644
--- a/lib/defaults.json
+++ b/lib/defaults.json
@@ -1,3 +1,3 @@
 {
-    "bundleVersion": "codeql-bundle-20211122"
+    "bundleVersion": "codeql-bundle-20211208"
 }
diff --git a/src/defaults.json b/src/defaults.json
index 248e273377..ffbb3b29e1 100644
--- a/src/defaults.json
+++ b/src/defaults.json
@@ -1,3 +1,3 @@
 {
-  "bundleVersion": "codeql-bundle-20211122"
+  "bundleVersion": "codeql-bundle-20211208"
 }