diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 34c3955..db68dc1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -50,7 +50,7 @@ jobs:
       uses: actions/setup-node@39370e3970a6d050c480ffad4ff0ed4d3fdee5af # 4.1.0
       with:
         node-version: ${{ matrix.node.version }}
-        env: NODE_OPTIONS=${{ matrix.node.options }}
+        env: NODE_OPTIONS="${{ matrix.node.options }}"
         cache: 'npm'
     - run: npm ci
     - run: npm run test:unit