diff --git a/src/python/grpcio/README.rst b/src/python/grpcio/README.rst
index 3fc318539ea5d2000b8add8ebcd5ce8ad6cfb902..28a27145682e5f1df4d6311b376bcb003c6a86c2 100644
--- a/src/python/grpcio/README.rst
+++ b/src/python/grpcio/README.rst
@@ -6,7 +6,7 @@ Package for gRPC Python.
 Installation
 ------------
 
-gRPC Python is available for Linux, Mac OS X, and Windows running Python 2.7.
+gRPC Python is available for Linux, macOS, and Windows.
 
 From PyPI
 ~~~~~~~~~