diff --git a/qapi/cxl.json b/qapi/cxl.json
index a38622a0d1..bdfac67c47 100644
--- a/qapi/cxl.json
+++ b/qapi/cxl.json
@@ -453,6 +453,10 @@
 # @extents: The "Extent List" field as defined in Compute Express Link
 #     (CXL) Specification, Revision 3.1, Table 7-70.
 #
+# Features:
+#
+# @unstable: For now this command is subject to change.
+#
 # Since : 9.1
 ##
 { 'command': 'cxl-add-dynamic-capacity',
@@ -462,7 +466,8 @@
             'region': 'uint8',
             '*tag': 'str',
             'extents': [ 'CxlDynamicCapacityExtent' ]
-           }
+           },
+  'features': [ 'unstable' ]
 }
 
 ##
@@ -527,6 +532,10 @@
 # @extents: The "Extent List" field as defined in Compute Express
 #     Link (CXL) Specification, Revision 3.1, Table 7-71.
 #
+# Features:
+#
+# @unstable: For now this command is subject to change.
+#
 # Since : 9.1
 ##
 { 'command': 'cxl-release-dynamic-capacity',
@@ -538,5 +547,6 @@
             'region': 'uint8',
             '*tag': 'str',
             'extents': [ 'CxlDynamicCapacityExtent' ]
-           }
+           },
+  'features': [ 'unstable' ]
 }