added link to gitter chat room
diff --git a/README.md b/README.md
index 412e84c..60ac871 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,7 @@
[](http://pybind11.readthedocs.org/en/master/?badge=master)
[](http://pybind11.readthedocs.org/en/stable/?badge=stable)
+[](https://gitter.im/pybind/Lobby)
[](https://travis-ci.org/pybind/pybind11)
[](https://ci.appveyor.com/project/wjakob/pybind11)