diff --git a/Dockerfile b/Dockerfile
index 312c79e..9dd09d9 100755
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
-FROM ubuntu:latest
+FROM ubuntu:20.04
 ENV DEBIAN_FRONTEND=noninteractive
-RUN apt update;apt install -y curl sudo git build-essential postgresql postgresql-contrib cmake libmagic-dev imagemagick ffmpeg libimage-exiftool-perl nginx certbot unzip libssl-dev automake autoconf libncurses5-dev
+RUN apt update;apt upgrade -y;apt install -y curl sudo git build-essential postgresql postgresql-contrib cmake libmagic-dev imagemagick ffmpeg libimage-exiftool-perl nginx certbot unzip libssl-dev automake autoconf libncurses5-dev
 RUN useradd -r -s /bin/false -m -d /var/lib/pleroma -U pleroma;mkdir /opt/pleroma;chown -R pleroma:pleroma /opt/pleroma;chown -R  pleroma:pleroma /var/lib/pleroma
 RUN su pleroma -s /bin/bash -lc 'git clone -b soapbox-v1.1.1 https://gitlab.com/soapbox-pub/soapbox-be /opt/pleroma'