diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3f105c6..432286d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,3 +29,10 @@
       - run: cargo build
       - run: cargo test
         if: matrix.rust != '1.17.0'
+  tables:
+    name: Verify tables
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Verify regenerated files
+        run: ./scripts/unicode.py && rustfmt tables.rs && diff tables.rs src/tables.rs