diff --git a/ChangeLog b/ChangeLog
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--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2019-12-22  Jeff Miller  <jeffm@apple.com>
+
+        Update user-visible copyright strings to include 2020
+        https://bugs.webkit.org/show_bug.cgi?id=205552
+
+        Reviewed by Darin Adler.
+
+        * Source/cmake/tools/scripts/COPYRIGHT-END-YEAR:
+
 2019-12-18  Diego Pino Garcia  <dpino@igalia.com>
 
         [GTK][WPE] Renderization of Conic gradients