Update README.md

Author: eel76

README.md

@@ -123,9 +123,9 @@ You might also take also a look at the rust documentation to get familiar with t
 
 | Family | Minimum version | Required flags |
 | ------ | --------------- | -------------- |
-| clang  | 17.0.1          | -std=c++20     |
+| clang  | 16.0.0          | -std=c++20     |
 | gcc    | 13.3            | -std=c++20     |
-| MSVC   | 19.36           | /std:c++20     |
+| MSVC   | 19.34           | /std:c++20     |
 
 ## Using the library ... step by step