diff --git a/CMakeLists.txt b/CMakeLists.txt
index ebcf988..060ec8c 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@
 
 cmake_minimum_required(VERSION 3.8)
 
-project(sdbus-c++ VERSION 0.3.2 LANGUAGES C CXX)
+project(sdbus-c++ VERSION 0.4.0 LANGUAGES C CXX)
 
 include(GNUInstallDirs) # Installation directories for `install` command and pkgconfig file
 
diff --git a/ChangeLog b/ChangeLog
index 8ada428..7a1b765 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -34,3 +34,7 @@ v0.3.3
 - Minor fixes in tutorial examples
 - Add comment on threading traits of Variant and its const methods
 - Fix broken invariant of const Variant::peekValueType() method
+
+v0.4.0
+- Introduce support and implementation of common D-Bus annotations
+- Remove hard-coded warning-related compiler options from the build system