diff --git a/.github/workflows/var-branch.yml b/.github/workflows/var-branch.yml
new file mode 100644
index 0000000..57af4cf
--- /dev/null
+++ b/.github/workflows/var-branch.yml
@@ -0,0 +1,15 @@
+name: Var branch main
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  check-branch:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Verify source branch
+        if: github.head_ref != 'dev'
+        run: |
+          echo "Error: Don't merge to main!"
+          exit 1
\ No newline at end of file