diff --git a/.github/workflows/package.yml b/.github/workflows/package.yml
index 430e908..aff060a 100644
--- a/.github/workflows/package.yml
+++ b/.github/workflows/package.yml
@@ -15,6 +15,7 @@ jobs:
         uses: actions/checkout@v2
       - name: Set up npm vsce
         run: |
+          yarn install
           sudo npm install vsce -g
       - name: Package extension
         run: |