diff --git a/.travis.yml b/.travis.yml
index a7a5213..1b4906b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,9 @@ node_js:
   - 10
   - 8
 
+before_install:
+  - npm install -g yarn
+
 after_success:
   - npm run benchmark
   - npm run coveralls