diff --git a/RELEASE_GUIDELINES.md b/RELEASE_GUIDELINES.md
index 8a8867d62be898be3e171dec6b6ca2eb7e69b6e4..e8ca40c630d04f9dd0b0276d5f63beb06504a558 100644
--- a/RELEASE_GUIDELINES.md
+++ b/RELEASE_GUIDELINES.md
@@ -20,8 +20,9 @@ guidelines of the CaosDB Project
 
 3. Check all general prerequisites.
 
-4. Prepare [CMakeLists.txt](./CMakeLists.txt): Check the `MAJOR`, `MINOR`, `PATCH`
-   version variables.
+4. Update version numbers:
+   1. In [CMakeLists.txt](./CMakeLists.txt): Check the `MAJOR`, `MINOR`, `PATCH` version variables.
+   2. In `conanfile.py`: Update the `version` variable.
 
 5. Merge the release branch into the main branch.
 
diff --git a/conanfile.py b/conanfile.py
index 409f65d7e34ec50d1c04f40f0f306911f0b4456d..f399a6445ef3a8f396ae08fc85fe3688fd80f5cc 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -16,7 +16,6 @@ class CaosdbConan(ConanFile):
     requires = [
         ("boost/1.77.0"),
         ("grpc/1.39.1"),
-        ("zlib/1.2.12"),        # TODO Remove when grpc dows not require 1.2.10
     ]
     build_requires = [
         ("gtest/1.11.0"),