diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 6eb2f90..2d1ff91 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -13,5 +13,5 @@ jobs:
       uses: actions/setup-node@v1
       with:
         node-version: ${{ matrix.node-version }}
-    - run: npm i
+    - run: npm i --no-optional
     - run: npm run nyc_mocha_napi