diff --git a/Hi.Wpf.csproj b/Hi.Wpf.csproj
index eefe2ec..b75c9d2 100644
--- a/Hi.Wpf.csproj
+++ b/Hi.Wpf.csproj
@@ -12,7 +12,7 @@
 			HiAPI wpf canvas.
 		</Description>
     <Configurations>Debug;Release</Configurations>
-    <VersionBuild>3</VersionBuild>
+    <VersionBuild>4</VersionBuild>
     <VersionPrefix>3.1.$(VersionBuild)</VersionPrefix>
     <PackageTags>HiAPI</PackageTags>
     <RuntimeIdentifiers>win-x64</RuntimeIdentifiers>