diff --git a/docs/releases/1.5.5.txt b/docs/releases/1.5.5.txt
index 172d91cdbd..ebd3dc73d1 100644
--- a/docs/releases/1.5.5.txt
+++ b/docs/releases/1.5.5.txt
@@ -31,3 +31,9 @@ Bugfixes
   Oracle and MySQL (#21203, #21126).
 * Fixed crashes when using combinations of ``annotate()``,
   ``select_related()``, and ``only()`` (#16436).
+
+Backwards incompatible changes
+==============================
+
+* The undocumented ``django.core.servers.basehttp.WSGIServerException`` has
+  been removed. Use ``socket.error`` provided by the standard library instead.
diff --git a/docs/releases/1.6.txt b/docs/releases/1.6.txt
index cae12759f5..66ba6f81a3 100644
--- a/docs/releases/1.6.txt
+++ b/docs/releases/1.6.txt
@@ -899,6 +899,10 @@ Miscellaneous
   to prevent django from deleting the temporary .pot file it generates before
   creating the .po file.
 
+* The undocumented ``django.core.servers.basehttp.WSGIServerException`` has
+  been removed. Use ``socket.error`` provided by the standard library instead.
+  This change was also released in Django 1.5.5.
+
 Features deprecated in 1.6
 ==========================