diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index ec98a0d..f7a4480 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -9,7 +9,7 @@ jobs:
   static-tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.1.0
 
       - uses: actions/setup-python@v2
         with:
@@ -35,7 +35,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [static-tests]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.1.0
 
       - uses: actions/setup-python@v2
         with: