diff --git a/docs/PreReleaseNotes.txt b/docs/PreReleaseNotes.txt
index 1ddf9f5653c..0589233c7ab 100644
--- a/docs/PreReleaseNotes.txt
+++ b/docs/PreReleaseNotes.txt
@@ -14,6 +14,7 @@ Prerelease Notes
    * Provide mechanism to pass command line arguments to plugins.
 
 + **Major bug fixes**
+   * Fix broken IPv4 backward compatability in clusters with supervisors.
    * Propagate tried token across static ENOENT redirects to properly
      avoid failing servers.
    * Reorder ofs initialization in 4.1 to avoid disabling frm