diff --git a/package.json b/package.json
index b5bd6c9e3..e4befc735 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "issie",
-  "version": "3.0.11",
+  "version": "4.0.1",
   "description": "Schematic editor and Simulator",
   "homepage": "https://github.com/tomcl/issie",
   "bugs": {
diff --git a/src/Renderer/Interface/Version.fs b/src/Renderer/Interface/Version.fs
index 744255dcf..8627308f4 100644
--- a/src/Renderer/Interface/Version.fs
+++ b/src/Renderer/Interface/Version.fs
@@ -1,5 +1,5 @@
 module Version
-let VERSION = [ 3 ; 0 ; 11 ]
+let VERSION = [ 4 ; 0 ; 1 ]
 
 // The first 12  white-space separated words in this file must be in the above format - note that spaces are required.
 // This works as valid F# data for displaying the code version and can also be read programmatically from the master branch github file