diff --git a/LadybugTools_Engine/Properties/AssemblyInfo.cs b/LadybugTools_Engine/Properties/AssemblyInfo.cs
index 51c716a3..7b30c120 100644
--- a/LadybugTools_Engine/Properties/AssemblyInfo.cs
+++ b/LadybugTools_Engine/Properties/AssemblyInfo.cs
@@ -55,5 +55,5 @@
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
 [assembly: AssemblyVersion("4.0.0.0")]
-[assembly: AssemblyFileVersion("4.1.0.0")]
+[assembly: AssemblyFileVersion("4.2.0.0")]