diff --git a/.github/workflows/milestone-merged-prs.yaml b/.github/workflows/milestone-merged-prs.yaml
new file mode 100644
index 00000000000..b4b5d0bc338
--- /dev/null
+++ b/.github/workflows/milestone-merged-prs.yaml
@@ -0,0 +1,18 @@
+name: Milestone
+
+on:
+  pull_request_target:
+    types:
+      - closed
+    branches:
+      - "main"
+
+jobs:
+  milestone_pr:
+    name: attach to PR
+    runs-on: ubuntu-latest
+    steps:
+      - uses: scientific-python/attach-next-milestone-action@f94a5235518d4d34911c41e19d780b8e79d42238
+        with:
+          token: ${{ secrets.MILESTONE_LABELER_TOKEN }}
+          force: true