1 files changed, 2 insertions, 0 deletions
diff --git a/synapse/config/experimental.py b/synapse/config/experimental.py
index 83695f24d9..6503ce6e34 100644
--- a/synapse/config/experimental.py
+++ b/synapse/config/experimental.py
@@ -99,6 +99,8 @@ class ExperimentalConfig(Config):
         self.msc3771_enabled: bool = experimental.get("msc3771_enabled", False)
         # MSC3772: A push rule for mutual relations.
         self.msc3772_enabled: bool = experimental.get("msc3772_enabled", False)
+        # MSC3773: Thread notifications
+        self.msc3773_enabled: bool = experimental.get("msc3773_enabled", False)
 
         # MSC3715: dir param on /relations.
         self.msc3715_enabled: bool = experimental.get("msc3715_enabled", False)