diff --git a/RELEASE_GUIDELINES.md b/RELEASE_GUIDELINES.md
index 9dd648c235258b052332212bd906525e87863629..f0856c6ad63d9d3a6720705a264d4f13482954a5 100644
--- a/RELEASE_GUIDELINES.md
+++ b/RELEASE_GUIDELINES.md
@@ -18,12 +18,14 @@ guidelines of the CaosDB Project
 
 2. Check all general prerequisites.
 
-3. Merge the release branch into the main branch.
+3. update src/doc/conf.py version
 
-4. Tag the latest commit of the main branch with `v<VERSION>`.
+4. Merge the release branch into the main branch.
 
-5. Delete the release branch.
+5. Tag the latest commit of the main branch with `v<VERSION>`.
 
-6. Merge the main branch back into the dev branch.
+6. Delete the release branch.
 
-7. Prepare CHANGELOG for next release cycle.
+7. Merge the main branch back into the dev branch.
+
+8. Prepare CHANGELOG for next release cycle.
diff --git a/src/doc/conf.py b/src/doc/conf.py
index 8e627dd0c26f9d760c549abfab4cbc824baa9912..34639e51442d8cc97a74e30b3046d2f2ac999286 100644
--- a/src/doc/conf.py
+++ b/src/doc/conf.py
@@ -26,9 +26,9 @@ copyright = '2020, IndiScale GmbH'
 author = 'Daniel Hornung'
 
 # The short X.Y version
-version = '0.X.Y'
+version = '0.5.0'
 # The full version, including alpha/beta/rc tags
-release = '0.x.y-beta-rc2'
+release = '0.5.0'
 
 
 # -- General configuration ---------------------------------------------------