diff --git a/tools/buildenv/Dockerfile b/tools/buildenv/Dockerfile
index c86b304a..96ab05fc 100644
--- a/tools/buildenv/Dockerfile
+++ b/tools/buildenv/Dockerfile
@@ -1,7 +1,6 @@
-FROM	alpine
+FROM	alpine:3.20
 LABEL	maintainer rgerhards@adiscon.com
-RUN	apk add --no-cache py-pip git
-RUN	pip install sphinx
+RUN	apk add --no-cache git py3-sphinx
 RUN	adduser -s /bin/ash -D rsyslog rsyslog \
 	&& echo "rsyslog ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
 WORKDIR	/home/appliance
diff --git a/tools/buildenv/README.md b/tools/buildenv/README.md
index 0f95b56d..154a7e93 100644
--- a/tools/buildenv/README.md
+++ b/tools/buildenv/README.md
@@ -2,7 +2,7 @@ build:
 
 docker build  -t rsyslog/rsyslog_doc_gen .
 
-where rsyslog/rsyslog_doc_gen is the tag and the location on dockerhub. Obviously,
+where rsyslog/rsyslog_doc_gen is the tag and the location on Docker Hub. Obviously,
 you need to use something else if you are not a maintainer of that repository.
 
 ENV VARS