diff --git a/CHANGELOG.md b/CHANGELOG.md
index fde478d01b29..0ddaeab3bd2b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ ENHANCEMENTS:
 
 * dependencies: updating `bot` to use API Version `2021-03-01` [GH-12449]
 * `azurerm_api_management_named_value` - support for the `value_from_key_vault` block [GH-12309]
+* `azurerm_api_management_api_diagnostic` - support for the `data_masking`1 property [GH-12419]
 * `azurerm_cognitive_account` - support for the `identity`, `storage`, `disable_local_auth`, `fqdns`, `public_network_access_enabled`, and `restrict_outbound_network_access` properties [GH-12469]
 
 BUG FIXES: