diff --git a/Dockerfile b/Dockerfile
index 3486140..d01be29 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,8 @@ MAINTAINER Andrey Arapov <andrey.arapov@nixaid.com>
 ENV DEBIAN_FRONTEND noninteractive
 
 RUN apt-get update
+RUN apt-get -y upgrade
+RUN apt-get -y dist-upgrade
 RUN apt-get -y --no-install-recommends install \
             ca-certificates apt-transport-https gnupg