diff --git a/.github/workflows/validation.yml b/.github/workflows/validation.yml
index 0b9983f..ab7f8f5 100644
--- a/.github/workflows/validation.yml
+++ b/.github/workflows/validation.yml
@@ -15,7 +15,7 @@ jobs:
 
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+    - uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633
     - name: Set up Python
       uses: actions/setup-python@0a5c61591373683505ea898e09a3ea4f39ef2b9c
       with: