diff --git a/Dockerfile b/Dockerfile
index c1c9968..e5eb5c4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM    golang:1.11.8
+FROM    golang:1.11.9
 
 # allow replacing httpredir or deb mirror
 ARG     APT_MIRROR=deb.debian.org