diff --git a/CHANGELOG.md b/CHANGELOG.md
index cf7c0113..97e72062 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+### 6.4.9
+- Move the PollingMode option to public scope.
+
 ### 6.4.8
 - Readd `System.Text.RegularExpressions` version `4.3.1` due to SNYK security report.