diff --git a/.travis.yml b/.travis.yml
index 0b61384..f681e10 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,4 +4,4 @@ elixir:
   - 1.8
 script:
   - mix test
-  - mix run examples/gaps.exs
+  - MIX_ENV=test mix run examples/gaps.exs