diff --git a/.github/workflows/redirect.yml b/.github/workflows/redirect.yml
@@ -0,0 +1,37 @@
+name: Redirect issues to Processing 4
+
+on:
+  issues:
+    types: [opened]
+
+permissions:
+  issues: write
+
+jobs:
+  redirect:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/github-script@v9
+        with:
+          script: |
+            const body = `> Thanks for your report. Please note that this repository is inactive and only kept for legacy purposes.
+            >
+            > If you're reporting a bug or requesting a feature for Processing 4, please open an issue in **https://github.com/processing/processing4/issues/new/choose** instead.
+            >
+            > This issue will be closed automatically.`;
+
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body
+            });
+
+            await github.rest.issues.update({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              state: "closed",
+              state_reason: "not_planned"
+            });