diff --git a/Dockerfile b/Dockerfile
index c597522..78946a6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,7 +21,7 @@
 #   devops-stages/stage-build.sh
 #
 
-FROM ubuntu:20.04
+FROM ubuntu:22.04
 
 ARG APT_PROXY
 RUN if [ ! -z $APT_PROXY ] ; then \
@@ -37,7 +37,6 @@
         python3 \
         python3-all \
         python3-dev \
-        python3-setuptools
-
-RUN python3 -m easy_install pip==21.3.1
-RUN pip install tox==3.24.5
+        python3-setuptools \
+        python3-pip \
+        tox