diff --git a/CHANGELOG.md b/CHANGELOG.md
index c918c5e7..3a4eac1f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,7 +16,7 @@ will consitute of a breaking change warranting a new major release:
 
 # [unreleased]
 
-# [v4.0.1] 2023-06-23
+# [v4.0.1] 2023-06-24
 
 ## Fixed
 
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3c7e1c1e..9e234cae 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,7 +11,7 @@ cmake_minimum_required(VERSION 3.13)
 
 set(OBSW_VERSION_MAJOR 4)
 set(OBSW_VERSION_MINOR 0)
-set(OBSW_VERSION_REVISION 0)
+set(OBSW_VERSION_REVISION 1)
 
 # set(CMAKE_VERBOSE TRUE)