diff --git a/.github/workflows/pr-check.yaml b/.github/workflows/pr-check.yaml
deleted file mode 100644
index fafbcd7..0000000
--- a/.github/workflows/pr-check.yaml
+++ /dev/null
@@ -1,20 +0,0 @@
-name: Source branch check
-on:
-  pull_request:
-    branches: [main]
-    types:
-      - opened
-      - reopened
-      - synchronize
-      - edited
-jobs:
-  check-main:
-    if: github.base_ref == 'main'
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check branches
-        run: |
-          if [ ${{ github.head_ref }} != "staging" ]; then
-            echo "Merge requests to main branch are only allowed from staging branch."
-            exit 1
-          fi