diff --git a/.travis.yml b/.travis.yml
index 34dc7ce..a32517e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,7 +9,7 @@ julia:
 matrix:
   fast_finish: true
   allow_failures:
-    julia: nightly
+    - julia: nightly
 
 notifications:
   email: false