diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index a3fcda3..486903a 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -8,9 +8,14 @@ on:
 permissions:
   contents: read
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
 jobs:
   check:
     runs-on: ubuntu-latest
+    timeout-minutes: 20
     services:
       postgres:
         image: postgres:16
@@ -28,11 +33,13 @@ jobs:
     env:
       TEST_LINK_DATABASE_URL: postgresql://bell_test:bell_test@127.0.0.1:5432/bell_test
     steps:
-      - uses: actions/checkout@v4
-      - uses: pnpm/action-setup@v4
+      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
+        with:
+          persist-credentials: false
+      - uses: pnpm/action-setup@b906affcce14559ad1aafd4ab0e942779e9f58b1 # v4
         with:
           version: 10.33.4
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
         with:
           node-version: 24
       - run: pnpm install --frozen-lockfile