diff --git a/Dockerfile b/Dockerfile
index e390ae2..12c9444 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,10 @@
-FROM alpine:3.13
+FROM ruby:3-alpine
 
 LABEL org.opencontainers.image.authors="hanjo@bunix.de"
 
-ENV DEV_PACKAGES="build-base libffi-dev ruby-dev ruby-rdoc ruby-irb gcc make musl-dev"
+ENV DEV_PACKAGES="build-base libffi-dev"
+RUN apk add --no-cache ${DEV_PACKAGES}
 
-RUN apk add --no-cache ca-certificates ruby ruby-json libffi libstdc++ ${DEV_PACKAGES}
 
 ARG JEKYLL_VERSION
 RUN gem install jekyll -v ${JEKYLL_VERSION} --no-document \