diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 9a8fefd..7a45cd4 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -6,13 +6,12 @@ jobs:
   grammar-tests:
     name: Grammar Tests
     runs-on: ubuntu-latest
+    defaults:
+      run:
+      - working-directory: ./tree-sitter-p4
     steps:
       - uses: actions/checkout@v2
-      - working-directory: ./tree-sitter-p4
-        uses: actions/setup-node@v4
-      - working-directory: ./tree-sitter-p4
-        run: npm ci
-      - working-directory: ./tree-sitter-p4
-        run: npm run generate
-      - working-directory: ./tree-sitter-p4
-        run: npm run test
+      - uses: actions/setup-node@v4
+      - run: npm ci
+      - run: npm run generate
+      - run: npm run test