diff --git a/docker/production/Dockerfile b/docker/production/Dockerfile
index bf51753..47f31d4 100644
--- a/docker/production/Dockerfile
+++ b/docker/production/Dockerfile
@@ -1,7 +1,7 @@
-FROM python:3.9-bullseye
+FROM python:3.9-bookworm
 
 # install additional dependencies
-RUN apt-get update && apt-get install -y gettext texlive texlive-fonts-extra
+RUN apt-get update && apt-get install -y gettext texlive texlive-fonts-extra pandoc
 
 # create user
 RUN groupadd -g 501 app && useradd -g 501 -u 501 -m -d /app app
diff --git a/docker/test/Dockerfile b/docker/test/Dockerfile
index a4de64d..3005167 100644
--- a/docker/test/Dockerfile
+++ b/docker/test/Dockerfile
@@ -1,7 +1,7 @@
-FROM python:3.9-bullseye
+FROM python:3.9-bookworm
 
 # install additional dependencies
-RUN apt-get update && apt-get install -y gettext texlive texlive-fonts-extra
+RUN apt-get update && apt-get install -y gettext texlive texlive-fonts-extra pandoc
 
 # create user
 RUN groupadd -g 501 app && useradd -g 501 -u 501 -m -d /app app