diff -up kid-0.9.6/kid/serialization.py.escape-gt kid-0.9.6/kid/serialization.py
--- kid-0.9.6/kid/serialization.py.escape-gt	2007-07-16 13:02:53.000000000 +0200
+++ kid-0.9.6/kid/serialization.py	2010-01-10 14:42:09.000000000 +0100
@@ -408,6 +408,7 @@ class XMLSerializer(Serializer):
                     return encode_entity(text, entities=entity_map)
             text = text.replace("&", "&")
             text = text.replace("<", "&lt;")
+            text = text.replace("]]>", "]]&gt;")
         except (TypeError, AttributeError):
             raise_serialization_error(text)
         return text
@@ -423,6 +424,7 @@ class XMLSerializer(Serializer):
                     return encode_entity(text, entities=entity_map)
             text = text.replace("&", "&amp;")
             text = text.replace("<", "&lt;")
+            text = text.replace("]]>", "]]&gt;")
             text = text.replace("\"", "&quot;")
         except (TypeError, AttributeError):
             raise_serialization_error(text)
@@ -684,6 +686,7 @@ class HTMLSerializer(HTMLBased, Serializ
             if escape:
                 text = text.replace("&", "&amp;")
                 text = text.replace("<", "&lt;")
+                text = text.replace("]]>", "]]&gt;")
         except (TypeError, AttributeError):
             raise_serialization_error(text)
         return text