diff --git a/.github/workflows/bootstrap.yml b/.github/workflows/bootstrap.yml
new file mode 100644
index 00000000..fd37825b
--- /dev/null
+++ b/.github/workflows/bootstrap.yml
@@ -0,0 +1,27 @@
+name: Bootstrap with Happy-1
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+
+    - uses: actions/checkout@v4
+
+    - uses: haskell-actions/setup@v2
+
+    - run: cabal install --ignore-project happy-1.20.1.1
+
+    - run: happy --version
+
+    - run: cabal build
+
+    - run: cabal run happy --version