diff --git a/README.md b/README.md
index f3ac13f9..bb3a7cc2 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 <img align="right" height=135px src="docs/assets/images/mp-units-color.svg">
 
 [![GitHub license](https://img.shields.io/github/license/mpusz/mp-units?cacheSeconds=3600&color=informational&label=License)](./LICENSE.md)
-[![GitHub license](https://img.shields.io/badge/C%2B%2B-20-blue)](https://en.cppreference.com/w/cpp/compiler_support#cpp20)
+[![GitHub license](https://img.shields.io/badge/C%2B%2B-20%2F23-blue)](https://en.cppreference.com/w/cpp/compiler_support#cpp20)
 
 [![Conan CI](https://img.shields.io/github/actions/workflow/status/mpusz/mp-units/ci-conan.yml?branch=master&label=Conan%20CI)](https://github.com/mpusz/mp-units/actions/workflows/ci-conan.yml)
 [![CMake CI](https://img.shields.io/github/actions/workflow/status/mpusz/mp-units/ci-test-package-cmake.yml?branch=master&label=CMake%20CI)](https://github.com/mpusz/mp-units/actions/workflows/ci-test-package-cmake.yml)