diff --git a/.travis.yml b/.travis.yml
index 2804c084acb..87f93a1896d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,7 +9,7 @@ notifications:
 node_js:
   - '6'
 before_script:
-  - lerna exec -- yarn
+  - lerna exec -- yarn --mutex network
 script:
   - lerna exec -- yarn test
 branches: