diff --git a/src/line-bot-sdk-csharp/line-bot-sdk-csharp.csproj b/src/line-bot-sdk-csharp/line-bot-sdk-csharp.csproj
index f5565c9..e141021 100644
--- a/src/line-bot-sdk-csharp/line-bot-sdk-csharp.csproj
+++ b/src/line-bot-sdk-csharp/line-bot-sdk-csharp.csproj
@@ -6,7 +6,7 @@
 		<Nullable>enable</Nullable>
 		<!-- NuGet -->
 		<PackageId>line-bot-sdk-csharp</PackageId>
-		<Version>2.2.0</Version>
+		<Version>2.2.1</Version>
 		<Description>LINE Messaging API SDK for C#</Description>
 		<Authors>rikupin1105</Authors>
 		<RepositoryUrl>https://github.com/rikupin1105/line-bot-sdk-csharp</RepositoryUrl>