diff --git a/Dockerfile b/Dockerfile
index 1881f4fc3..b71592553 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.10-slim-bullseye
+FROM python:3.10-slim-bookworm
 
 RUN apt-get clean
 RUN apt-get update
@@ -8,9 +8,10 @@ RUN curl -sSL https://install.python-poetry.org | python3 -
 ENV PATH="/root/.local/bin:$PATH"
 
 # needed for backups postgresql-client version 14 (pg_dump)
-RUN apt-get install -y apt-utils wget
-RUN echo "deb http://apt.postgresql.org/pub/repos/apt bullseye-pgdg main" > /etc/apt/sources.list.d/pgdg.list
-RUN wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add -
+RUN apt install -y postgresql-common ca-certificates
+RUN install -d /usr/share/postgresql-common/pgdg
+RUN curl -o /usr/share/postgresql-common/pgdg/apt.postgresql.org.asc --fail https://www.postgresql.org/media/keys/ACCC4CF8.asc
+RUN sh -c 'echo "deb [signed-by=/usr/share/postgresql-common/pgdg/apt.postgresql.org.asc] https://apt.postgresql.org/pub/repos/apt bookworm-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
 RUN apt-get update
 RUN apt-get install -y postgresql-client-14