diff --git a/release-notes/9.0/known-issues.md b/release-notes/9.0/known-issues.md
index 35e0c0672f..76d9c719c4 100644
--- a/release-notes/9.0/known-issues.md
+++ b/release-notes/9.0/known-issues.md
@@ -122,3 +122,13 @@ If you had previously specified the `WindowsSdkPackageVersion` property to fix t
     <FrameworkReference Include="Microsoft.Windows.SDK.NET.Ref" IsImplicitlyDefined="true" Pack="false" PrivateAssets="All" />
 </ItemGroup> 
 ```
+
+## ASP.NET Core
+
+### Microsoft.AspNetCore.Components.CustomElements package not published in 9.0.3
+
+The Microsoft.AspNetCore.Components.CustomElements package will not ship in version 9.0.3. A blocking issue was discovered late in the release cycle, so the package will not ship until version 9.0.4, which will contain the fix.
+
+#### Workaround
+
+Use version 9.0.2 of the package until version 9.0.4 becomes available in April.