diff --git a/.travis.yml b/.travis.yml
index 4bcb26c..7e87a31 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,7 +12,7 @@ node_js:
 before_install:
   - npm i -g yarn --cache-min 999999999
 install:
-  - yarn
+  - yarn --force
 script:
   - yarn test
 after_script: