Update Doc/library/collections.rst

rhettinger · picnixz · web-flow · commit 5470a58e55e5 · 2025-09-24T07:59:08.000-05:00
Co-authored-by: Bénédikt Tran &lt;10796600+picnixz@users.noreply.github.com&gt;
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
@@ -404,7 +404,7 @@ or subtracting from an empty counter.
 .. versionadded:: 3.3
     Added support for unary plus, unary minus, and in-place multiset operations.
 
-.. versionadded:: 3.15
+.. versionadded:: next
     Added support for the symmetric difference multiset operation, ``c ^ d``.
 
 .. note::
