diff --git a/Dockerfile b/Dockerfile
index 822ea6c..d4bf646 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,7 +10,7 @@ FROM dockerfile/ubuntu
 # Install Go
 RUN \
   mkdir -p /goroot && \
-  curl https://storage.googleapis.com/golang/go1.4.2.linux-amd64.tar.gz | tar xvzf - -C /goroot --strip-components=1
+  curl https://storage.googleapis.com/golang/go1.5.1.linux-amd64.tar.gz | tar xvzf - -C /goroot --strip-components=1
 
 # Set environment variables.
 ENV GOROOT /goroot