diff --git a/.travis.yml b/.travis.yml
index f8f46bb..f6293e6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,8 +4,10 @@ os:
   - linux
 #  - osx
 julia:
-  - 1.2
-  - 1.3
+  - 1
+env:
+  - GROUP=Core
+  - GROUP=Downstream
 notifications:
   email: false
 # uncomment the following lines to override the default test script