diff --git a/Doc/lib/libcontextlib.tex b/Doc/lib/libcontextlib.tex
index 842c954..46f9cdd 100644
--- a/Doc/lib/libcontextlib.tex
+++ b/Doc/lib/libcontextlib.tex
@@ -4,6 +4,8 @@
 \declaremodule{standard}{contextlib}
 \modulesynopsis{Utilities for \keyword{with}-statement contexts.}
 
+\versionadded{2.5}
+
 This module provides utilities for common tasks involving the
 \keyword{with} statement.
 
diff --git a/Doc/ref/ref3.tex b/Doc/ref/ref3.tex
index dfd4102..48a37f1 100644
--- a/Doc/ref/ref3.tex
+++ b/Doc/ref/ref3.tex
@@ -2109,6 +2109,8 @@
 
 \subsection{Context Managers and Contexts\label{context-managers}}
 
+\versionadded{2.5}
+
 A \dfn{context manager} is an object that manages the entry to, and exit
 from, a \dfn{context} surrounding a block of code.  Context managers are
 normally invoked using the \keyword{with} statement (described in
diff --git a/Doc/ref/ref7.tex b/Doc/ref/ref7.tex
index a5a6eaf..ecbc756 100644
--- a/Doc/ref/ref7.tex
+++ b/Doc/ref/ref7.tex
@@ -312,6 +312,8 @@
 \section{The \keyword{with} statement\label{with}}
 \stindex{with}
 
+\versionadded{2.5}
+
 The \keyword{with} statement is used to wrap the execution of a block
 with methods defined by a context manager (see
 section~\ref{context-managers}). This allows common