diff --git a/vagrant-common.rb b/vagrant-common.rb
index 704d024e..9c0c6b5b 100644
--- a/vagrant-common.rb
+++ b/vagrant-common.rb
@@ -1,4 +1,8 @@
-$go_version = "1.5.2"
+$go_regexp = /FROM golang:(\S*).*?/
+$go_version = File.readlines("build/Dockerfile").first { |line| line.match($go_regexp) }.match($go_regexp).captures.first
+if $go_version.nil?
+  raise ArgumentError.new("Failed to read Go version from Dockerfile.")
+end
 
 $go_path = "/usr/local/go/bin"