diff --git a/.github/workflows/assign.yml b/.github/workflows/assign.yml
index 70b7208..f963f4c 100644
--- a/.github/workflows/assign.yml
+++ b/.github/workflows/assign.yml
@@ -11,6 +11,6 @@ jobs:
       issues: write
     steps:
       - name: 'Auto-assign issue'
-        uses: pozil/auto-assign-issue@v3
+        uses: pozil/auto-assign-issue@v4
         with:
           assignees: kyoh86