diff --git a/Dockerfile b/Dockerfile
index a9136868..7d0baacd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Generate a container that generates requirements.txt
-ARG PY_VERSION=3.7
+ARG PY_VERSION=3.9
 FROM python:${PY_VERSION} as source
 
 ARG DEV
@@ -20,8 +20,7 @@ RUN if [ -z ${DEV} ]; \
     fi
 
 # Generate work image
-ARG PY_VERSION
-FROM python:${PY_VERSION}
+FROM registry.access.redhat.com/ubi9/python-39
 
 # Project maintainer
 LABEL maintainer="frolland@redhat.com"