diff --git a/Dockerfile b/Dockerfile
index 7394f49..eec8c90 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,6 +20,8 @@ RUN apt-get install -y bison build-essential curl flex git-core gnupg gperf libe
 RUN apt-get install -y g++-multilib gcc-multilib lib32ncurses5-dev lib32readline-gplv2-dev lib32z1-dev
 RUN apt-get install -y tig
 
+RUN apt-get -qqy upgrade
+
 # Workaround for apt-get upgrade issue described here: https://github.com/dotcloud/docker/issues/1724
 # If you still have problems with upgrading this image, you most likely use an outdated base image
 RUN dpkg-divert --local --rename /usr/bin/ischroot && ln -sf /bin/true /usr/bin/ischroot