diff --git a/.travis.yml b/.travis.yml
index 1772b0fa7..4173b7ccc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,7 +19,7 @@ env:
     - GROUP=js/tree
 before_install:
     - pip install --upgrade pip
-    - pip install --upgrade setuptools wheel
+    - pip install --upgrade setuptools wheel nose
     - 'if [[ $GROUP == js* ]]; then npm install -g casperjs; fi'
     - git clone --quiet --depth 1 https://github.com/minrk/travis-wheels travis-wheels
 install: