diff --git a/Dockerfile b/Dockerfile
index 662c72b5..b7bf1574 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM --platform=linux/amd64 python:3.8-slim-buster as base
+FROM --platform=linux/amd64 python:3.8-slim-bullseye as base
 
 # Update pip in the base image since we'll use it everywhere
 RUN pip install -U pip
@@ -15,7 +15,6 @@ RUN : \
     -y --no-install-recommends \
     curl \
     git \
-    ipython \
     make \
     vim \
     g++ \
diff --git a/mkdocs/Dockerfile b/mkdocs/Dockerfile
index c8630a5a..e0e4e86d 100644
--- a/mkdocs/Dockerfile
+++ b/mkdocs/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.8-slim-buster
+FROM python:3.8-slim-bullseye
 
 # Install auxiliary software
 RUN apt-get update