diff --git a/docker/Dockerfile b/docker/Dockerfile
index 84899b4..94eed15 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,29 +1,29 @@
-FROM debian:buster
+FROM debian:bullseye
 MAINTAINER Guillaume Anciaux
 
 RUN apt-get update && apt-get dist-upgrade -y && apt-get install -y postgresql && apt-get clean -y && rm -r /var/lib/apt/lists/*
 
 # Run the rest of the commands as the ``postgres`` user created by the ``postgres-9.3`` package when it was ``apt-get installed``
 USER postgres
 
 RUN /etc/init.d/postgresql start &&\
     psql --command "CREATE USER docker WITH SUPERUSER PASSWORD 'docker';" &&\
     createdb -O docker docker &&\
     psql --command "CREATE USER blackdynamite WITH PASSWORD '';" &&\    
     createdb -O blackdynamite blackdynamite
 
 RUN /etc/init.d/postgresql stop
 
 # Adjust PostgreSQL configuration so that remote connections to the
 # database are possible.
 RUN find /etc/postgresql
 RUN echo "host all  all    0.0.0.0/0  md5" >> /etc/postgresql/11/main/pg_hba.conf
 
 # And add ``listen_addresses`` to ``/etc/postgresql/11/main/postgresql.conf``
 RUN echo "listen_addresses='*'" >> /etc/postgresql/11/main/postgresql.conf
 
 # Expose the PostgreSQL port
 EXPOSE 5432:5432
 
 # Set the default command to run when starting the container
 CMD ["/usr/lib/postgresql/11/bin/postgres", "-D", "/var/lib/postgresql/11/main", "-c", "config_file=/etc/postgresql/11/main/postgresql.conf"]