diff --git a/Dockerfile b/Dockerfile
index af9fe37..3e435e9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,13 +1,14 @@
-FROM phusion/baseimage:0.9.22
+FROM phusion/baseimage:bionic-1.0.0
 
 MAINTAINER David Coppit <david@coppit.org>
 
-RUN apt-add-repository ppa:mumble/release
-RUN apt-get update
-RUN apt-get install -y mumble-server=1.2.19-1~ppa4~xenial1 
+RUN apt-add-repository ppa:mumble/release \
+	&& apt-get update \
+	&& apt-get install -y mumble-server=1.3.3-1~ppa1~bionic1
 
 # Add the start script
 ADD start.sh /tmp/start.sh
+
 RUN chmod 755 /tmp/start.sh
 
 VOLUME ["/data"]