diff --git a/README.rst b/README.rst
index 8a02981f..1f68bff6 100644
--- a/README.rst
+++ b/README.rst
@@ -54,6 +54,8 @@ Features
 
 * Should work with Python 2.7 and newer, including Python 3.
 
+* Windows is not supported.
+
 Links
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