diff --git a/CMakeLists.txt b/CMakeLists.txt
index 11960e09..6ac396b1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,7 +17,7 @@ set(CPACK_RESOURCE_FILE_README "${CMAKE_CURRENT_SOURCE_DIR}/readme.md")
 set(CPACK_PACKAGE_DESCRIPTION_FILE "${CMAKE_CURRENT_SOURCE_DIR}/description.txt")
 
 set(CPACK_PACKAGE_VERSION_MAJOR 4)
-set(CPACK_PACKAGE_VERSION_MINOR 0)
+set(CPACK_PACKAGE_VERSION_MINOR 1)
 set(CPACK_PACKAGE_VERSION_PATCH 0)
 set(CPACK_PACKAGE_EXECUTABLES "chai;ChaiScript Eval")
 set(CPACK_PACKAGE_VENDOR "ChaiScript.com")
diff --git a/releasenotes.txt b/releasenotes.txt
index 4a523014..5f8b0469 100644
--- a/releasenotes.txt
+++ b/releasenotes.txt
@@ -1,3 +1,8 @@
+Changes since 4.0.0
+* Fix sizing of numeric constants to match that of the C++ standard
+* Add support for u,ll,l,f suffixes for numeric constants
+* Siginificant improvement in error reporting
+
 Changes since 3.1.0
 * svenstaro: Unused variables and CMake consistency fixes
 * Added support for returning pointers from functions (#13)