diff --git a/Dockerfile b/Dockerfile
index e548d31..06d95a9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -11,6 +11,7 @@ RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 
 # Install dependencies
 RUN apt-get update \
+  && apt-get -y dist-upgrade \
   && apt-get install -y wget gnupg2 lsb-core apt-transport-https ca-certificates curl \
   && wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add - \
   && echo "deb [ trusted=yes ] https://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg main" | tee /etc/apt/sources.list.d/pgdg.list \