diff --git a/.travis.yml b/.travis.yml
index 0b3bd80..a419b28 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,13 +1,13 @@
 language: python
 python:
   - "2.7"
-#  - "3.3"
+  - "3.3"
   - "3.4"
   - "3.5"
 
 # command to install dependencies
 install:
-  - "pip install -r requirements.txt"
+  - "pip install --only-binary=scipy -r requirements.txt"
   - "pip install -r test-requirements.txt"
   - "pip install coveralls"