diff --git a/Dockerfile b/Dockerfile
index 0040c34..5f16566 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.8
+FROM alpine:3.9
 MAINTAINER Jochen Schalanda <jochen+docker@schalanda.name>
 
 ENV PROSODY_VERSION 0.10.2-r0