diff --git a/mwclient/RELEASE-NOTES.txt b/mwclient/RELEASE-NOTES.txt
index f940ab061ba1e47742196593e38f80ac22f90cec..d6716a410224d2cdc56bdf5325e4777716787126 100644
--- a/mwclient/RELEASE-NOTES.txt
+++ b/mwclient/RELEASE-NOTES.txt
@@ -3,7 +3,9 @@ RELEASE NOTES FOR MWCLIENT
 This is mwclient 0.6.5. The following are the release notes for this version.
 
 == Changes in version 0.6.5 ==
-No changes yet
+* Explicitly convert the Content-Length header to str, avoiding a TypeError
+  on some versions of Python.
+* Fix for upload by URL
 
 == Changes in version 0.6.4 ==
 * Added support for upload API