diff --git a/.travis.yml b/.travis.yml
index 7932108..b1c1254 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,7 @@ python:
     - 3.7-dev
 install:
     - pip install -r requirements.txt -r requirements-dev.txt
+    - npm install
 script:
     - pytest --cov=.
 after_success: