diff --git a/.github/workflows/auto-delete-feature-branches.yml b/.github/workflows/auto-delete-feature-branches.yml
new file mode 100644
index 0000000..3492bca
--- /dev/null
+++ b/.github/workflows/auto-delete-feature-branches.yml
@@ -0,0 +1,31 @@
+name: auto-delete-feature-branches
+
+on:
+  pull_request:
+    types:
+      - closed
+
+permissions:
+  contents: write
+
+jobs:
+  delete-head-branch:
+    if: >-
+      github.event.pull_request.merged == true &&
+      github.event.pull_request.head.repo.full_name == github.repository &&
+      (
+        startsWith(github.event.pull_request.head.ref, 'feat/') ||
+        startsWith(github.event.pull_request.head.ref, 'feature/')
+      )
+    runs-on: ubuntu-latest
+    steps:
+      - name: Delete merged head branch
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const headRef = context.payload.pull_request.head.ref;
+            await github.rest.git.deleteRef({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              ref: `heads/${headRef}`
+            });