diff --git a/src/aioappsrv/app.py b/src/aioappsrv/app.py
index 9208f24..07c1975 100644
--- a/src/aioappsrv/app.py
+++ b/src/aioappsrv/app.py
@@ -44,7 +44,8 @@ class AppService:
 		self.logger = logger if logger is not None else logging.getLogger(__file__)
 
 		self._app.add_routes([
-			web.put('/transactions/{transaction}', lambda req: self._handler(req))
+			web.put('/transactions/{transaction}', lambda req: self._handler(req)),
+			web.put('/_matrix/app/v1/transactions/{transaction}', lambda req: self._handler(req)),
 		])
 
 	async def _handler(self, request: web.Request) -> web.Response: