diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index a8ced53..a105af5 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ 'centos-7', 'rocky-8', 'debian-11', 'debian-12', 'fedora', 'ubuntu-20.04', 'ubuntu-22.04']
+        os: [ 'centos-7', 'rocky-8', 'rocky-9', 'debian-11', 'debian-12', 'fedora', 'ubuntu-20.04', 'ubuntu-22.04']
     steps:
       - name: Checkout
         uses: actions/checkout@v3
diff --git a/docker/rocky-9/Dockerfile b/docker/rocky-9/Dockerfile
new file mode 100644
index 0000000..d6a43e4
--- /dev/null
+++ b/docker/rocky-9/Dockerfile
@@ -0,0 +1,77 @@
+FROM rockylinux/rockylinux:9
+
+ARG BRANCH=master
+ARG RSTUDIO=2023.06.2-561
+
+# Enable EPEL
+RUN \
+  yum upgrade -y && \
+  yum install -y dnf-plugins-core epel-release &&\
+  yum config-manager --set-enabled epel-testing crb
+
+# Install.
+RUN \
+  useradd -ms /bin/bash builder && \
+  yum update -y && \
+  yum upgrade -y && \
+  yum install -y rpm-build make wget tar httpd-devel libapreq2-devel R-devel libcurl-devel protobuf-devel openssl-devel libxml2-devel libicu-devel cairo-devel createrepo cmake && \
+  yum clean all
+
+USER builder
+
+RUN \
+  mkdir -p ~/rpmbuild/SOURCES && \
+  mkdir -p ~/rpmbuild/SPECS
+
+RUN \
+  cd ~ && \
+  wget --quiet https://github.com/jeffreyhorner/rapache/archive/v1.2.9.tar.gz -O rapache-1.2.9.tar.gz && \
+  tar xzvf rapache-1.2.9.tar.gz rapache-1.2.9/rpm/rapache.spec --strip-components 2 && \
+  mv -f rapache-1.2.9.tar.gz ~/rpmbuild/SOURCES/ && \
+  mv -f rapache.spec ~/rpmbuild/SPECS/ && \
+  rpmbuild -ba ~/rpmbuild/SPECS/rapache.spec
+
+RUN \
+  cd ~ && \
+  VERSION=${BRANCH/v/} && \
+  wget --quiet https://github.com/opencpu/opencpu-server/archive/${BRANCH}.tar.gz -O opencpu-server-${VERSION}.tar.gz  && \
+  tar xzvf opencpu-server-${VERSION}.tar.gz opencpu-server-${VERSION}/rpm/opencpu.spec --strip-components 2 && \
+  mv -f opencpu-server-${VERSION}.tar.gz ~/rpmbuild/SOURCES/ && \
+  mv -f opencpu.spec ~/rpmbuild/SPECS/ && \
+  rpmbuild -ba ~/rpmbuild/SPECS/opencpu.spec --define "branch ${VERSION}"
+
+RUN \
+  createrepo ~/rpmbuild/RPMS/x86_64/
+
+USER root
+
+RUN \
+  cp -Rf /home/builder/rpmbuild/RPMS ~/ && \
+  cp -Rf /home/builder/rpmbuild/SRPMS ~/ && \
+  userdel -r builder
+
+RUN \
+  yum install -y MTA mod_ssl /usr/sbin/semanage && \
+  /usr/libexec/httpd-ssl-gencerts && \
+  cd ~/RPMS/x86_64/ && \
+  rpm -i rapache-*.rpm && \
+  rpm -i opencpu-lib-*.rpm && \
+  rpm -i opencpu-server-*.rpm
+
+RUN \
+  wget --quiet https://download2.rstudio.org/server/rhel9/x86_64/rstudio-server-rhel-${RSTUDIO}-x86_64.rpm && \
+  yum install -y --nogpgcheck rstudio-server-rhel-${RSTUDIO}-x86_64.rpm && \
+  rm rstudio-server-rhel-${RSTUDIO}-x86_64.rpm && \
+  echo "server-app-armor-enabled=0" >> /etc/rstudio/rserver.conf
+
+RUN \
+  yum remove -y httpd-devel libapreq2-devel && \
+  yum clean all
+
+# Apache ports
+EXPOSE 80
+EXPOSE 443
+EXPOSE 8004
+
+# Define default command.
+CMD /usr/lib/rstudio-server/bin/rserver && apachectl -DFOREGROUND
diff --git a/docker/rocky-9/README.md b/docker/rocky-9/README.md
new file mode 120000
index 0000000..32d46ee
--- /dev/null
+++ b/docker/rocky-9/README.md
@@ -0,0 +1 @@
+../README.md
\ No newline at end of file