diff --git a/.github/workflows/test_gen.yml b/.github/workflows/test_gen.yml
index f6591b45..44b14c81 100644
--- a/.github/workflows/test_gen.yml
+++ b/.github/workflows/test_gen.yml
@@ -23,7 +23,7 @@ jobs:
     name: re-generate tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3.5.3
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           fetch-depth: 0
       - uses: chrisdickinson/setup-yq@v1.0.1