diff --git a/.github/workflows/clean.yml b/.github/workflows/clean.yml
new file mode 100644
index 00000000..2ee83a25
--- /dev/null
+++ b/.github/workflows/clean.yml
@@ -0,0 +1,18 @@
+name: "Clean-up"
+
+on:
+  schedule:
+    - cron: "17 3 * * 0"
+  workflow_dispatch:
+
+jobs:
+  clean:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Delete workflow runs
+        uses: dmvict/clean-workflow-runs@v1
+        with:
+          run_conclusions: skipped,success
+          save_period: 90
+          save_min_runs_number: 25
+          dry: false
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 686cbf74..67b71a32 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -7,7 +7,7 @@ on:
     # The branches below must be a subset of the branches above
     branches: [ "master" ]
   schedule:
-    - cron: '32 1 * * 3'
+    - cron: "27 3 * * 0"
   workflow_dispatch:
 
 jobs: