diff --git a/.github/actions/custom-submodule-update/action.yml b/.github/actions/custom-submodule-update/action.yml
index f0d9e44..ef0d02c 100644
--- a/.github/actions/custom-submodule-update/action.yml
+++ b/.github/actions/custom-submodule-update/action.yml
@@ -32,7 +32,7 @@ runs:
   using: "composite"
   steps:
     - name: Checkout parent repository and branch
-      uses: actions/checkout@v
+      uses: actions/checkout@v4
       with:
         token: ${{ inputs.github_token }}
         repository: ${{ inputs.parent_repository }}