diff --git a/.travis.yml b/.travis.yml
index 6cbc591a2..7096eff13 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,7 @@
 sudo: required
 language: go
 go:
-- 1.10
+- "1.10"
 go_import_path: v2ray.com/core
 git:
   depth: 5