diff --git a/Dockerfile b/Dockerfile
index 931da3e..dda7a41 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -24,7 +24,7 @@
 #   devops-stages/stage-build.sh
 #
 
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 
 ARG APT_PROXY
 RUN if [ ! -z $APT_PROXY ] ; then \
@@ -37,13 +37,13 @@
         debhelper \
         dh-make \
         git \
-        python3.8 \
+        python3 \
         python3-all \
         python3-dev \
         python3-setuptools
 
-RUN python3 -m easy_install pip==21.0.1
-RUN pip3 install tox==3.22.0
+RUN python3 -m easy_install pip==21.3.1
+RUN pip install tox==3.24.5
 
 ENV LC_ALL C.UTF-8
 ENV LANG C.UTF-8