diff --git a/ChangeLog b/ChangeLog
index bf6095c..3424727 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2021-03-03  Tatsuya Kinoshita  <tats@debian.org>
+
+	* Str.c: Prevent unneeded memory allocation in Strgrow.
+
 2021-03-02  Tatsuya Kinoshita  <tats@debian.org>
 
 	* Str.c: Prevent large memory usage and null-deref in Str.c.