diff --git a/CMakeLists.txt b/CMakeLists.txt
index ce721cd..fab5b34 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.24)
 
 set(re-edit_VERSION_MAJOR 1)
-set(re-edit_VERSION_MINOR 3)
+set(re-edit_VERSION_MINOR 4)
 set(re-edit_VERSION_PATCH 0)
 set(re-edit_VERSION "${re-edit_VERSION_MAJOR}.${re-edit_VERSION_MINOR}.${re-edit_VERSION_PATCH}")
 
diff --git a/README.md b/README.md
index 904d2b2..bb0c929 100644
--- a/README.md
+++ b/README.md
@@ -93,6 +93,15 @@ pongasoft produces a variety of high quality and free/open source software. If y
 
 Release Notes
 -------------
+
+* #### 1.4.0 - 2023/02/20
+
+- Implemented Undo History / Timeline (quickly undo/redo multiple operations)
+- Easily show/hide a widget even if there is no visibility property defined (eye icon)
+- Added an "All" widgets tab in the Widgets window (in this tab, widgets are sorted by name). The "Widgets" and "Decals" tab remain the same and are sorted by Z-order (this is where you would go to change their respective orders).
+- Major redesign of the "Properties" window to only show visibility properties currently in use
+- Implemented "drag and drop" to easily add a widget to a visibility group (use "Alt" key to add to multiple groups): drag a widget from the Widgets window and drop onto a group in the Properties window (drag and drop also works from within the Properties window itself).
+- Internal complete redesign of the Undo layer to be more flexible and allow "timeline"
  
 * #### 1.3.0 - 2023/01/31