diff --git a/.github/workflows/openapi.yml b/.github/workflows/openapi.yml
index e3a4648..d85d290 100644
--- a/.github/workflows/openapi.yml
+++ b/.github/workflows/openapi.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
 
       - name: Lint with Redocly
         run: >-