diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index de81983..d1b2683 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -21,3 +21,9 @@ jobs:
       run: cargo test
     - name: Regen
       run: python scripts/unicode.py && diff tables.rs src/tables.rs
+  regen:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Verify regenerated files
+      run: ./scripts/unicode.py && diff tables.rs src/tables.rs
diff --git a/scripts/unicode.py b/scripts/unicode.py
old mode 100644
new mode 100755