diff --git a/ChangeLog b/ChangeLog
index cdcf5d5e8..774a9ce6c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2025-04-28  dana  <dana@dana.is>
 
+	* unposted: README: add missed note about <<< redirection
+
 	* 53527: Doc/Zsh/contrib.yo, Functions/Misc/zgetopt, NEWS,
 	Test/Z04zgetopt.ztst: remove zgetopt (feature not ready)
 
diff --git a/README b/README
index 4da92eee8..993a79abd 100644
--- a/README
+++ b/README
@@ -217,6 +217,11 @@ The ${name:offset:length} expansion syntax now behaves more similarly to
 other shells in that the offset and length are applied as array indices
 prior to scalar conversion in e.g. "${*:0:2}".
 
+The optimization for the =(<<<foo) construct with no command, which
+creates a temporary file with contents "foo", now adds a newline byte
+after "foo" for consistency with the behaviour of the <<< redirection
+everywhere else.
+
 Incompatibilities between 5.7.1 and 5.8.1
 -----------------------------------------