1 files changed, 5 insertions, 1 deletions
diff --git a/synapse/config/experimental.py b/synapse/config/experimental.py
index 001bddc6f6..a207de63b8 100644
--- a/synapse/config/experimental.py
+++ b/synapse/config/experimental.py
@@ -34,7 +34,11 @@ class ExperimentalConfig(Config):
 
         # MSC2858 (multiple SSO identity providers)
         self.msc2858_enabled = experimental.get("msc2858_enabled", False)  # type: bool
-        # Spaces (MSC1772, MSC2946, etc)
+
+        # Spaces (MSC1772, MSC2946, MSC3083, etc)
         self.spaces_enabled = experimental.get("spaces_enabled", False)  # type: bool
+        if self.spaces_enabled:
+            KNOWN_ROOM_VERSIONS[RoomVersions.MSC3083.identifier] = RoomVersions.MSC3083
+
         # MSC3026 (busy presence state)
         self.msc3026_enabled = experimental.get("msc3026_enabled", False)  # type: bool