diff --git a/src/Smdn.MSBuild.DefineConstants.NETSdkApi/Smdn.MSBuild.DefineConstants.NETSdkApi.csproj b/src/Smdn.MSBuild.DefineConstants.NETSdkApi/Smdn.MSBuild.DefineConstants.NETSdkApi.csproj
index ed1920fac..5dbfcb553 100644
--- a/src/Smdn.MSBuild.DefineConstants.NETSdkApi/Smdn.MSBuild.DefineConstants.NETSdkApi.csproj
+++ b/src/Smdn.MSBuild.DefineConstants.NETSdkApi/Smdn.MSBuild.DefineConstants.NETSdkApi.csproj
@@ -5,7 +5,7 @@ SPDX-License-Identifier: MIT
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks>netstandard1.6</TargetFrameworks>
-    <VersionPrefix>1.2.4</VersionPrefix>
+    <VersionPrefix>1.3.0</VersionPrefix>
     <VersionSuffix></VersionSuffix>
     <!-- <NoBuild>true</NoBuild> target 'Compile' is required to generate API list -->
     <IncludeBuildOutput>false</IncludeBuildOutput>