diff --git a/circle.yml b/circle.yml
index 3982c1036..40908e568 100644
--- a/circle.yml
+++ b/circle.yml
@@ -1,6 +1,6 @@
 machine:
   go:
-    version: 1.8.1
+    version: 1.9.0
   services:
     - docker
     - memcached