diff --git a/ChangeLog b/ChangeLog
index 4bae4cf6..08ab3690 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+1.8.22
+  * allow colons in HTML attribute names for namespaces
+    Changed: linkcheck/parser/htmllex.l
+
 1.8.21
   * detect recursive redirections; the maximum of five redirections is
     still there though