diff --git a/python/doc/source/plasma.rst b/python/doc/source/plasma.rst
index 74837b96c48..b64b4c26065 100644
--- a/python/doc/source/plasma.rst
+++ b/python/doc/source/plasma.rst
@@ -24,6 +24,9 @@ The Plasma In-Memory Object Store
 .. contents:: Contents
   :depth: 3
 
+.. note::
+
+   As present, Plasma is only supported for use on Linux and macOS.
 
 The Plasma API
 --------------