diff --git a/docs/api.rst b/docs/api.rst
index 12dcfde16..392adc425 100644
--- a/docs/api.rst
+++ b/docs/api.rst
@@ -1130,7 +1130,7 @@ of :class:`enum.Enum`.
 
         A private thread
 
-        .. versionadded:: 1.8
+        .. versionadded:: 2.0
 
 .. class:: MessageType