diff --git a/SharpChatwork/SharpChatwork.csproj b/SharpChatwork/SharpChatwork.csproj
index 1a1eef7..33d171a 100644
--- a/SharpChatwork/SharpChatwork.csproj
+++ b/SharpChatwork/SharpChatwork.csproj
@@ -41,7 +41,7 @@ Release.</PackageReleaseNotes>
 
   <ItemGroup>
     <PackageReference Include="MimeMapping" Version="3.0.1" />
-    <PackageReference Include="System.Text.Json" Version="8.0.3" />
+    <PackageReference Include="System.Text.Json" Version="8.0.5" />
   </ItemGroup>
 
 </Project>