diff --git a/circle.yml b/circle.yml
index a497eb39f279..03a9d6257e19 100644
--- a/circle.yml
+++ b/circle.yml
@@ -1,9 +1,17 @@
 # Circle CI configuration file
 # https://circleci.com/docs/
 
-test:
+machine:
+  python:
+    version: 2.7.11
+
+dependencies:
   override:
+    - pyenv global 2.7.11
     - pip install -e pkg -e master -e slave
+
+test:
+  override:
     - make docs
 
 general: