diff --git a/build.cake b/build.cake
index ee623e46b2..9ac91f575b 100644
--- a/build.cake
+++ b/build.cake
@@ -15,7 +15,7 @@ var ErrorDetail = new List<string>();
 // SET PACKAGE VERSION
 //////////////////////////////////////////////////////////////////////
 
-var version = "4.0.0";
+var version = "4.0.1";
 var modifier = "";
 
 var dbgSuffix = configuration.ToLower() == "debug" ? "-dbg" : "";
diff --git a/src/NUnitFramework/FrameworkVersion.cs b/src/NUnitFramework/FrameworkVersion.cs
index 66260b8372..9dccb33462 100644
--- a/src/NUnitFramework/FrameworkVersion.cs
+++ b/src/NUnitFramework/FrameworkVersion.cs
@@ -5,5 +5,5 @@
 //
 // Current version for the NUnit Framework
 //
-[assembly: AssemblyVersion("4.0.0.0")]
-[assembly: AssemblyFileVersion("4.0.0.0")]
+[assembly: AssemblyVersion("4.0.1.0")]
+[assembly: AssemblyFileVersion("4.0.1.0")]