diff --git a/.readthedocs.yml b/.readthedocs.yml
index bc7299e..a551cd0 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -6,10 +6,9 @@ sphinx:
 formats: all
 
 build:
-  image: latest
+  os: ubuntu-22.04
+  tools:
+    python: "mambaforge-22.9"
 
 conda:
   environment: docs/source/environment.yml
-
-python:
-    version: "3.8"
diff --git a/README.md b/README.md
index 02a4c8f..e23d0d5 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@ This is a template repository for Singularity/Dockerfile containers/images and b
 [![Documentation Status](https://readthedocs.org/projects/container-template/badge/?version=latest)](https://container-template.readthedocs.io/en/latest/?badge=latest)
 [![Flake8 lint](https://github.com/precimed/container_template/actions/workflows/python.yml/badge.svg)](https://github.com/precimed/container_template/actions/workflows/python.yml)
 [![Dockerfile lint](https://github.com/precimed/container_template/actions/workflows/docker.yml/badge.svg)](https://github.com/precimed/container_template/actions/workflows/docker.yml)
+[![Container build](https://github.com/precimed/container_template/actions/workflows/container_build.yml/badge.svg)](https://github.com/precimed/container_template/actions/workflows/container_build.yml)
 [![Container build push](https://github.com/precimed/container_template/actions/workflows/container_build_push.yml/badge.svg)](https://github.com/precimed/container_template/actions/workflows/container_build_push.yml)
 [![Use this Template](https://img.shields.io/badge/Use%20this%20template-green.svg)](https://github.com/new?template_name=container_template&template_owner=precimed)
 
diff --git a/version/version.py b/version/version.py
index 7b3bbbc..4d2bcfb 100644
--- a/version/version.py
+++ b/version/version.py
@@ -5,7 +5,7 @@
 _PATCH = "0"
 # This is mainly for nightly builds which have the suffix ".dev$DATE". See
 # https://semver.org/#is-v123-a-semantic-version for the semantics.
-_SUFFIX = "rc5"
+_SUFFIX = "rc6"
 
 VERSION_SHORT = "{0}.{1}".format(_MAJOR, _MINOR)
 VERSION = "{0}.{1}.{2}{3}".format(_MAJOR, _MINOR, _PATCH, _SUFFIX)
\ No newline at end of file