diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index 9e063c9c7..e117e0d17 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -13,6 +13,9 @@ jobs:
         with:
           node-version: 12
 
+      - name: upgrade yarn
+        run: npm install yarn -g
+
       - name: install
         run: yarn install