Update README.md

Author: codingseb

README.md

@@ -16,7 +16,7 @@ Some tools to use C# Regex in Notepad++ (As Notepad++ Plugin)
 Need a [Notepad++](https://notepad-plus-plus.org/) x86 or x64 installed on the machine and the right to write in the plugin directory.
 (At least version 7.6.3, older versions can work but need modification of the file [NppPlugin.DllExport.targets](https://github.com/codingseb/CSharpRegexTools4Npp/blob/master/CSharpRegexTools4Npp/PluginInfrastructure/DllExport/NppPlugin.DllExport.targets) see [Notepad++ plugins new directories structures](https://notepad-plus-plus.org/community/topic/16996/new-plugins-home-round-2))
 
-Need .Net Framework 4.6 or greater
+Need .Net Framework 4.7 or greater
 
 ## Installation