diff --git a/Hi.WinForm.csproj b/Hi.WinForm.csproj
index b6e2694..e8ebc8a 100644
--- a/Hi.WinForm.csproj
+++ b/Hi.WinForm.csproj
@@ -7,8 +7,8 @@
     <RootNamespace>$(AssemblyName)</RootNamespace>
     <Platforms>x64</Platforms>
     <Description>WinForm Display module of HiAPI</Description>
-    <VersionBuild>0</VersionBuild>
-    <VersionPrefix>3.2.$(VersionBuild)</VersionPrefix>
+    <VersionBuild>154</VersionBuild>
+    <VersionPrefix>3.1.$(VersionBuild)</VersionPrefix>
     <PackageTags>HiAPI</PackageTags>
     <RuntimeIdentifiers>win-x64</RuntimeIdentifiers>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
@@ -31,7 +31,7 @@
     <ProjectReference Include="..\HiDisp\HiDisp.csproj" />
   </ItemGroup>
   <ItemGroup Condition="'$(Configuration)'=='Release'">
-    <PackageReference Include="HiDisp" Version="3.2.*" />
+    <PackageReference Include="HiDisp" Version="3.1.*" />
   </ItemGroup>
   <Import Project="..\acc\deploy_local_nupkg.targets" Condition="'$(Configuration)'=='Release'" />
   <ItemGroup>