diff --git a/.changeset/fix-codeql-workflow-versions.md b/.changeset/fix-codeql-workflow-versions.md
new file mode 100644
index 000000000..ea000c575
--- /dev/null
+++ b/.changeset/fix-codeql-workflow-versions.md
@@ -0,0 +1,5 @@
+---
+"agentweaver": patch
+---
+
+Update deprecated CodeQL Action version (upload-sarif) to v4 in the Agent Host image maintenance workflow
diff --git a/.github/workflows/agent-host-maintenance.yml b/.github/workflows/agent-host-maintenance.yml
index ce69866fc..8b65d5fc2 100644
--- a/.github/workflows/agent-host-maintenance.yml
+++ b/.github/workflows/agent-host-maintenance.yml
@@ -107,7 +107,7 @@ jobs:
 
       - name: Upload Trivy SARIF to GitHub Security tab
         if: always()              # Upload even on scan failure so results are visible
-        uses: github/codeql-action/upload-sarif@v3
+        uses: github/codeql-action/upload-sarif@v4
         with:
           sarif_file: trivy-results.sarif