diff --git a/Dockerfile.app b/Dockerfile.app
index 3c27adc93..fe345a8c9 100644
--- a/Dockerfile.app
+++ b/Dockerfile.app
@@ -3,8 +3,6 @@ FROM elixir:1.10.3
 RUN apt-get update \
     && apt-get -qq -y install apt-transport-https \
     && echo "deb https://deb.nodesource.com/node_12.x stretch main" >> /etc/apt/sources.list \
-    && echo "deb http://apt.postgresql.org/pub/repos/apt/ stretch-pgdg main" >> /etc/apt/sources.list \
-    && wget -qO - "https://www.postgresql.org/media/keys/ACCC4CF8.asc" | apt-key add - \
     && wget -qO - "https://deb.nodesource.com/gpgkey/nodesource.gpg.key" | apt-key add - \
     && apt-get update \
     && apt-get -qq -y install inotify-tools netcat postgresql-client build-essential git ffmpeg libavformat-dev libavcodec-dev libswscale-dev nodejs libmagic-dev libpng-dev gifsicle optipng libjpeg-progs librsvg2-bin