diff --git a/.travis.yml b/.travis.yml
index 1634c9a7..c0b93f1b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -24,7 +24,7 @@ script:
 
 env:
   global:
-    - "JRUBY_OPTS='--dev -J-Xmx1024M' -d"
+    - "JRUBY_OPTS='--dev -J-Xmx1024M --debug'"
   matrix:
     - "RAILS_VERSION=4.0"
     - "RAILS_VERSION=4.1"