diff --git a/RELEASE_GUIDELINES.md b/RELEASE_GUIDELINES.md
index 00d0362e6630267c135e2566b993a91fccf1fd91..863afb8f3ac7d6770c372620523638b900785227 100644
--- a/RELEASE_GUIDELINES.md
+++ b/RELEASE_GUIDELINES.md
@@ -40,8 +40,9 @@ guidelines of the CaosDB Project
 
 11. Merge the main branch back into the dev branch.
 
-12. After the merge of main to dev, start a new development version by
-    setting `ISRELEASED` to `False` and by increasing at least the `MICRO`
-    version in [setup.py](./setup.py).
-    Also update CHANGELOG.md (new "Unreleased" section).
-    Also update `src/doc/conf.py`.
+12. After the merge of main to dev, start a new development version by setting
+    `ISRELEASED` to `False` and by increasing at least the `MICRO` version in
+    [setup.py](./setup.py). Please note that due to a bug in pip, the `PRE`
+    version has to remain empty in the setup.py.  
+    Also update CHANGELOG.md (new "Unreleased" section). Also update
+    `src/doc/conf.py`.