diff --git a/Dockerfile b/Dockerfile
index 1c94a1f90..943edeacf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.11.5-slim-bullseye
+FROM python:3.11.5-slim-bookworm
 ENV PYVERSION 3.11
 ENV WEBLATE_VERSION 5.0.2
 ENV WEBLATE_EXTRAS all,MySQL,zxcvbn,test
@@ -101,7 +101,7 @@ RUN \
     unzip \
     xz-utils \
   && c_rehash \
-  && echo "deb http://apt.postgresql.org/pub/repos/apt bullseye-pgdg main" > /etc/apt/sources.list.d/pgdg.list \
+  && echo "deb http://apt.postgresql.org/pub/repos/apt bookworm-pgdg main" > /etc/apt/sources.list.d/pgdg.list \
   && curl -L https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add - \
   && apt-get update \
   && apt-get install --no-install-recommends -y \