diff --git a/ble/att.h b/ble/att.h
index 0d786c7a2..1f99d51e1 100644
--- a/ble/att.h
+++ b/ble/att.h
@@ -144,7 +144,12 @@ extern "C" {
 #define GATT_SECONDARY_SERVICE_UUID                 0x2801
 #define GATT_INCLUDE_SERVICE_UUID                   0x2802
 #define GATT_CHARACTERISTICS_UUID                   0x2803
+#define GATT_CHARACTERISTIC_EXTENDED_PROPERTIES     0x2900
+#define GATT_CHARACTERISTIC_USER_DESCRIPTION        0x2901
 #define GATT_CLIENT_CHARACTERISTICS_CONFIGURATION   0x2902
+#define GATT_SERVER_CHARACTERISTICS_CONFIGURATION   0x2903
+#define GATT_CHARACTERISTIC_PRESENTATION_FORMAT     0x2904
+#define GATT_CHARACTERISTIC_AGGREGATE_FORMAT        0x2905
 
 #define GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NONE          0
 #define GATT_CLIENT_CHARACTERISTICS_CONFIGURATION_NOTIFICATION  1