forgot -r

Jiaqi Liu · Jiaqi Liu · commit df76c6e2f5db · 2017-08-25T13:00:14.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -37,7 +37,7 @@ before_install:
     - git clone --quiet --depth 1 https://github.com/minrk/travis-wheels travis-wheels
     - |
       if [[ $GROUP == docs ]]; then
-        pip install docs/doc-requirements.txt
+        pip install -r docs/doc-requirements.txt
       fi
 
 install:
