Remove legacy go versions
diff --git a/.travis.yml b/.travis.yml
index abd0c9c..ec7dd78 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,5 @@
 language: go
 go:
-  - 1.3
-  - 1.4
-  - 1.5
   - 1.6
   - 1.7
   - tip