diff --git a/.github/workflows/test_gen.yml b/.github/workflows/test_gen.yml
index f6591b45..fb24fa2b 100644
--- a/.github/workflows/test_gen.yml
+++ b/.github/workflows/test_gen.yml
@@ -23,10 +23,10 @@ jobs:
     name: re-generate tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3.5.3
+      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3
         with:
           fetch-depth: 0
-      - uses: chrisdickinson/setup-yq@v1.0.1
+      - uses: chrisdickinson/setup-yq@3d931309f27270ebbafd53f2daee773a82ea1822 # v1.0.1
         with:
           yq-version: 3.4.1
       - run: |