diff --git a/.travis.yml b/.travis.yml
index b66231993..d37048d92 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,8 @@ dist: trusty
 sudo: false
 language: go
 go:
-- 1.8.1
+- 1.8.3
+- 1.9rc1
 
 # add TF_CONSUL_TEST=1 to run consul tests
 # they were causing timouts in travis
diff --git a/Vagrantfile b/Vagrantfile
index 368331868..69d72df1b 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -5,7 +5,7 @@
 VAGRANTFILE_API_VERSION = "2"
 
 # Software version variables
-GOVERSION = "1.8.1"
+GOVERSION = "1.8.3"
 UBUNTUVERSION = "16.04"
 
 # CPU and RAM can be adjusted depending on your system