diff --git a/.travis.yml b/.travis.yml
index 987529e3..ce6eac27 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,6 +12,7 @@ cache:
   - yarn: true
   - directories:
     - node_modules
+    - packages/bundle-parser/node_modules
     - packages/reporter-treemap/node_modules
     - packages/plugin/node_modules
 addons: