diff --git a/.travis.yml b/.travis.yml
index dfd797f..3549fac 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,8 @@
 language: go
 go:
- - 1.9
- - 1.10
- - 1.11
+ - "1.9"
+ - "1.10"
+ - "1.11"
 install:
  - go get github.com/constabulary/gb/...
  - go get github.com/golang/lint/golint