diff --git a/Jenkinsfile b/Jenkinsfile
index f5027d5..49fc1b8 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,7 +1,7 @@
 #!groovy
 // Loads: https://gist.github.com/jglick/b13b509bc236566c8829
 standardBuild {
-    environment = 'golang:1.5.0'
+    environment = 'golang:1.4.0'
     mainScript = '''
 go version
 go build -v hello-world.go