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-rw-r--r--Doc/library/collections.rst2
1 files changed, 2 insertions, 0 deletions
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
index f4ba51ab9a..f57910124a 100644
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -241,6 +241,8 @@ For example::
>>> c.subtract(d)
Counter({'a': 3, 'b': 0, 'c': -3, 'd': -6})
+ .. versionadded:: 2.7
+
The usual dictionary methods are available for :class:`Counter` objects
except for two which work differently for counters.