diff --git a/environment.yml b/environment.yml
index ea2656ad..70007d98 100644
--- a/environment.yml
+++ b/environment.yml
@@ -1,9 +1,9 @@
-name: py36
+name: py35
 channels:
   - conda-forge
   - default
 dependencies:
-  - python=3.6
+  - python=3.5
   - sphinx=1.5.3
   - sphinx_rtd_theme=0.2.4
   - pip