diff --git a/.travis.yml b/.travis.yml
index 3741ee5..bd4a658 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,6 +18,12 @@ matrix:
       services: docker
       language: generic
 
+before_script:
+  #install yarn globally
+  - npm install -g yarn
+  # yarn install is like npm install
+  - yarn install
+
 script:
   - |
     if [ "$TRAVIS_OS_NAME" == "linux" ]; then
@@ -29,7 +35,7 @@ script:
          electronuserland/builder:wine \
          /bin/bash -c ' CI=false yarn --link-duplicates --pure-lockfile && CI=false yarn run release --publish onTag --linux --win'
     else
-      CI=false yarn run release --publish onTag
+      CI=false yarn --link-duplicates --pure-lockfile run release --publish onTag
     fi
 before_cache:
   - rm -rf $HOME/.cache/electron-builder/wine