diff --git a/dockerfiles/Dockerfile.spack-cgcore b/dockerfiles/Dockerfile.spack-cgcore
index 76d47a0..4d7f8b6 100644
--- a/dockerfiles/Dockerfile.spack-cgcore
+++ b/dockerfiles/Dockerfile.spack-cgcore
@@ -24,10 +24,8 @@ RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 # 02/23: autoconf added. Used by gmds during build.
 # 02/23: pkg-config added. Used by gts
 # 02/23: lsb-release added. Used by mgx start script.
-# 04/23: graphviz, sphinx and pip added. Used by mgx documentation
 RUN apt update &&\
     apt install -y build-essential cmake python3 python3-distutils python3-venv unzip zip curl git libxt-dev libgl-dev gfortran autoconf pkg-config lsb-release file &&\
-    apt install -y graphviz sphinx pip &&\
     apt clean &&\
     rm -rf /var/lib/apt/lists/*
 #==========================================