diff --git a/.travis.yml b/.travis.yml
index 47a2d50..3f5da5c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,10 +1,10 @@
 language: go
 go:
-  - 1.7.5
-  - 1.8.3
-  - 1.9
-  - 1.10
-  - 1.11
+  - '1.7.5'
+  - '1.8.3'
+  - '1.9'
+  - '1.10'
+  - '1.11'
   - tip
 os:
   - linux