diff --git a/.travis.yml b/.travis.yml
index 94c3092..439cee4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,8 +3,10 @@ os:
   - linux
 julia:
   - 0.6
-  - 0.5
-  - 0.4
+  - nightly
+matrix:
+  allow_failures:
+    - julia: nightly
 notifications:
   email: false
 before_install: