diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5bd68e73fa..b793ab3a08 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ Note that the only difference between `v2` and `v3` of the CodeQL Action is the
 
 ## [UNRELEASED]
 
+- Update default CodeQL bundle version to 2.16.0. [#2073](https://github.com/github/codeql-action/pull/2073)
 - Change the retention period for uploaded debug artifacts to 7 days. Previously, this was whatever the repository default was. [#2079](https://github.com/github/codeql-action/pull/2079)
 
 ## 3.23.0 - 08 Jan 2024
diff --git a/lib/defaults.json b/lib/defaults.json
index 7178962c82..28d020bdd7 100644
--- a/lib/defaults.json
+++ b/lib/defaults.json
@@ -1,6 +1,6 @@
 {
-    "bundleVersion": "codeql-bundle-v2.15.5",
-    "cliVersion": "2.15.5",
-    "priorBundleVersion": "codeql-bundle-v2.15.4",
-    "priorCliVersion": "2.15.4"
+    "bundleVersion": "codeql-bundle-v2.16.0",
+    "cliVersion": "2.16.0",
+    "priorBundleVersion": "codeql-bundle-v2.15.5",
+    "priorCliVersion": "2.15.5"
 }
diff --git a/src/defaults.json b/src/defaults.json
index 5294fbaf25..20438b7a21 100644
--- a/src/defaults.json
+++ b/src/defaults.json
@@ -1,6 +1,6 @@
 {
-  "bundleVersion": "codeql-bundle-v2.15.5",
-  "cliVersion": "2.15.5",
-  "priorBundleVersion": "codeql-bundle-v2.15.4",
-  "priorCliVersion": "2.15.4"
+  "bundleVersion": "codeql-bundle-v2.16.0",
+  "cliVersion": "2.16.0",
+  "priorBundleVersion": "codeql-bundle-v2.15.5",
+  "priorCliVersion": "2.15.5"
 }