diff --git a/README.md b/README.md
index f8e7c0ed..c233c5ac 100644
--- a/README.md
+++ b/README.md
@@ -1,12 +1,12 @@
 # Nana C++ Library 
-[Linux (gcc 5.4.0 and 4.9.2)![TravisCI build status](https://travis-ci.org/cnjinhao/nana.svg)](https://travis-ci.org/cnjinhao/nana)  including [(nana-demos)](https://github.com/qPCR4vir/nana-demo)
+[Linux (gcc 8.3.0 and 9.2)![TravisCI build status](https://travis-ci.org/cnjinhao/nana.svg)](https://travis-ci.org/cnjinhao/nana)  including [(nana-demos)](https://github.com/qPCR4vir/nana-demo)
 
-[Windows (Microsoft (R) Build Engine version 14.0.24720.0) ![AppVeyor build status](https://ci.appveyor.com/api/projects/status/5j79p9fi887usv7h?svg=true)](https://ci.appveyor.com/project/qPCR4vir/nana) 
+[Windows (Microsoft (R) Build Engine version 15.9.21) ![AppVeyor build status](https://ci.appveyor.com/api/projects/status/5j79p9fi887usv7h?svg=true)](https://ci.appveyor.com/project/qPCR4vir/nana) 
 
 [![Licence](https://img.shields.io/badge/license-BSL-blue.svg?style=flat)](LICENSE)
 
 
-Nana is a C++ library designed to allow developers to easily create cross-platform GUI applications with modern C++11 style. Currently it can work on Linux(X11) and Windows. The [nana repository](https://github.com/cnjinhao/nana) contains the entire source of the library. You can browse the source code and submit your pull request for contributing.
+Nana is a C++ standard-like GUI library designed to allow developers to easily create cross-platform GUI applications with modern C++ style. Currently it is regularly tested on Linux(X11) and Windows, and experimentally on macOS and FreeBSD. The [nana repository](https://github.com/cnjinhao/nana) contains the entire source of the library. You can browse the source code and submit your pull request for contributing.
 
 ## License