diff --git a/.travis.yml b/.travis.yml
index 1fbc4dccb7..af738bb429 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,4 +3,5 @@ node_js:
     - 6   # node v6, to match jenkins
 install:
     - npm install
+    - (cd node_modules/matrix-js-sdk && npm install)
     - (cd node_modules/matrix-react-sdk && npm run build)