Update badges for GitHub actions.
diff --git a/README.md b/README.md
index ec13d4e..89ccb81 100644
--- a/README.md
+++ b/README.md
@@ -3,8 +3,9 @@
[](https://github.com/nanomsg/nanomsg/releases/latest)
[](https://github.com/nanomsg/nanomsg/blob/master/COPYING)
-[](https://circleci.com/gh/nanomsg/nanomsg)
-[](https://ci.appveyor.com/project/nanomsg/nanomsg)
+[](https://github.com/nanomsg/nanomsg/actions/workflows/linux.yml)
+[](https://github.com/nanomsg/nanomsg/actions/workflows/windows.yml)
+[](https://github.com/nanomsg/nanomsg/actions/workflows/darwin.yml)
[](https://codecov.io/gh/nanomsg/nanomsg)
[](https://gitter.im/nanomsg/nanomsg)