diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 08b91c3..0aa7e65 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -31,8 +31,6 @@ jobs:
     name: "Dispatch Release"
     steps:
       - uses: actions/checkout@v4
-        with:
-          ref: refs/pull/${{ needs.get-prs.outputs.pr_number }}/merge
       - name: git config
         run: |
           git config --local user.email "LuckyBeast@users.noreply.github.com"
@@ -42,6 +40,12 @@ jobs:
         run: |
           PR_JSON=$(gh pr view ${{ needs.get-prs.outputs.pr_number }} --json isDraft,headRefName)
           echo "PR_IS_DRAFT=$(echo $PR_JSON | jq -r '.isDraft')" >> $GITHUB_OUTPUT
+          echo "PR_HEAD_REF=$(echo $PR_JSON | jq -r '.headRefName')" >> $GITHUB_OUTPUT
+        id: get_pr
+      # checkout PR
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ steps.get_pr.outputs.PR_HEAD_REF }}
       # jqでpackage.jsonから現在のバージョンを取得
       - name: Get current version
         run: |