diff --git a/docs/en/Migration-Guides/Abp-4_3.md b/docs/en/Migration-Guides/Abp-4_3.md
index c4541a6581..6464455011 100644
--- a/docs/en/Migration-Guides/Abp-4_3.md
+++ b/docs/en/Migration-Guides/Abp-4_3.md
@@ -1,3 +1,6 @@
 # ABP Framework 4.x to 4.3 Migration Guide
 
-TODO
\ No newline at end of file
+## Blazor UI
+
+- `PageHeader` component has been moved to the`Volo.Abp.AspNetCore.Components.Web.Theming.Layout` namespace.
+