diff --git a/.travis.yml b/.travis.yml
index 17a91baf..eecd0ff4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -41,6 +41,7 @@ python:
   - 3.2
   - 3.3
   - 3.4
+  - 3.5
 
 before_install:
     - ccache -s
diff --git a/optional_requirements.txt b/optional_requirements.txt
index 6dff92af..7b0fead5 100644
--- a/optional_requirements.txt
+++ b/optional_requirements.txt
@@ -1,6 +1,6 @@
 PySide; python_version != '2.7'
 imread; python_version != '2.7'
-SimpleITK; python_version != '3.4'
+SimpleITK; python_version != '3.4' and python_version != '3.5'
 astropy
 tifffile
 imageio; python_version != '2.6'