1 files changed, 8 insertions, 0 deletions
diff --git a/docs/sphinx/qapi_domain.py b/docs/sphinx/qapi_domain.py
index b672ae6c50..00fd11ebf7 100644
--- a/docs/sphinx/qapi_domain.py
+++ b/docs/sphinx/qapi_domain.py
@@ -218,6 +218,7 @@ class QAPIObject(QAPIDescription):
             # These are QAPI originals:
             "since": directives.unchanged,
             "deprecated": directives.flag,
+            "unstable": directives.flag,
         }
     )
 
@@ -300,6 +301,13 @@ class QAPIObject(QAPIDescription):
                 "qapi-deprecated",
             )
 
+        if "unstable" in self.options:
+            _add_pip(
+                ":unstable:",
+                f"This {self.objtype} is unstable/experimental.",
+                "qapi-unstable",
+            )
+
         if infopips.children:
             contentnode.insert(0, infopips)