diff --git a/Doc/lib/libpyexpat.tex b/Doc/lib/libpyexpat.tex
index b009729..eb8ccdb 100644
--- a/Doc/lib/libpyexpat.tex
+++ b/Doc/lib/libpyexpat.tex
@@ -119,6 +119,8 @@
 If this attribute is set to 1, the handler functions will be passed
 Unicode strings.  If \member{returns_unicode} is 0, 8-bit strings
 containing UTF-8 encoded data will be passed to the handlers.
+\versionchanged[Can be changed at any time to affect the result
+  type.]{1.6}
 \end{memberdesc}
 
 The following attributes contain values relating to the most recent