diff --git a/RevokeMsgPatcher/Properties/AssemblyInfo.cs b/RevokeMsgPatcher/Properties/AssemblyInfo.cs
index 9a08c5c..33c6be4 100644
--- a/RevokeMsgPatcher/Properties/AssemblyInfo.cs
+++ b/RevokeMsgPatcher/Properties/AssemblyInfo.cs
@@ -10,7 +10,7 @@ using System.Runtime.InteropServices;
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("huiyadanli")]
 [assembly: AssemblyProduct("RevokeMsgPatcher")]
-[assembly: AssemblyCopyright("Copyright ©  2019")]
+[assembly: AssemblyCopyright("Copyright ©  2019-2020")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]