diff --git a/docker/Dockerfile.release b/docker/Dockerfile.release
index 136a5b9cd..83228a104 100644
--- a/docker/Dockerfile.release
+++ b/docker/Dockerfile.release
@@ -16,7 +16,6 @@ RUN apt-get update && apt-get upgrade --no-install-recommends -y && \
     python3.8-dev \
     python3.8-tk \
     python-is-python3 \
-    graphviz* && \
     rm -rf /var/lib/apt/lists/* && \
     python3 -m pip install --no-cache-dir --upgrade pip wheel setuptools && \
     echo "export MPLBACKEND=TkAgg" >> /root/.bashrc && \
diff --git a/docker/release_resources/sanity_check.py b/docker/release_resources/sanity_check.py
index 8cb1e8550..676c34e6c 100644
--- a/docker/release_resources/sanity_check.py
+++ b/docker/release_resources/sanity_check.py
@@ -1,10 +1,5 @@
 import random
 
-# Check that extras are installed in the docker image
-import pygraphviz
-
-print("Extras import check OK")
-
 import concrete.numpy as cnp