Add a versionadded tag for SSL contexts.
diff --git a/Doc/library/ssl.rst b/Doc/library/ssl.rst
index d2f44a1..302cb00 100644
--- a/Doc/library/ssl.rst
+++ b/Doc/library/ssl.rst
@@ -410,6 +410,8 @@
 SSL Contexts
 ------------
 
+.. versionadded:: 3.2
+
 .. class:: SSLContext(protocol)
 
    An object holding various data longer-lived than single SSL connections,