diff --git a/.github/workflows/post-sns.yml b/.github/workflows/post-sns.yml
index 1f9e388f..447377e3 100644
--- a/.github/workflows/post-sns.yml
+++ b/.github/workflows/post-sns.yml
@@ -18,6 +18,8 @@ jobs:
       has_python_changes: ${{ steps.check.outputs.has_python_changes }}
     steps:
       - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
 
       - id: check
         run: |