diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8ee3a53..95c9bd6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,12 +33,12 @@ jobs:
 
       - name: install
         run: npm install
-        working-directory: ! 'examples/%{ matrix.example }'
+        working-directory: "! 'examples/%{ matrix.example }'"
 
       - name: build
         run: npm run build
-        working-directory: ! 'examples/%{ matrix.example }'
+        working-directory: "! 'examples/%{ matrix.example }'"
 
       - name: test
         run: npm run test --if-present
-        working-directory: ! 'examples/%{ matrix.example }'
+        working-directory: "! 'examples/%{ matrix.example }'"