diff --git a/.travis.yml b/.travis.yml
index 67c0e1b6..360f8a89 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,7 +20,8 @@ env:
 
 install:
   - npm config set registry http://23.251.144.68
-  - npm install
+  # Run npm install twice, because it is flaky.
+  - npm install || npm install
 
 before_script:
   - mkdir -p $LOGS_DIR