diff --git a/Dockerfile b/Dockerfile
index b4ec47e7789948eb555746664bfad9257828ccc6..5b8e5268128ab93b765875fc38aebe3820dc4a46 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.9.2 as builder
+FROM golang:1.9.4 as builder
 RUN CGO_ENABLED=0 go get -d -v github.com/bitly/oauth2_proxy
 RUN CGO_ENABLED=0 go install -v github.com/bitly/oauth2_proxy