1 files changed, 6 insertions, 7 deletions
diff --git a/synapse/http/federation/well_known_resolver.py b/synapse/http/federation/well_known_resolver.py
index 20d39a4ea6..43f2140429 100644
--- a/synapse/http/federation/well_known_resolver.py
+++ b/synapse/http/federation/well_known_resolver.py
@@ -70,10 +70,8 @@ WELL_KNOWN_RETRY_ATTEMPTS = 3
 logger = logging.getLogger(__name__)
 
 
-_well_known_cache = TTLCache("well-known")  # type: TTLCache[bytes, Optional[bytes]]
-_had_valid_well_known_cache = TTLCache(
-    "had-valid-well-known"
-)  # type: TTLCache[bytes, bool]
+_well_known_cache: TTLCache[bytes, Optional[bytes]] = TTLCache("well-known")
+_had_valid_well_known_cache: TTLCache[bytes, bool] = TTLCache("had-valid-well-known")
 
 
 @attr.s(slots=True, frozen=True)
@@ -130,9 +128,10 @@ class WellKnownResolver:
         # requests for the same server in parallel?
         try:
             with Measure(self._clock, "get_well_known"):
-                result, cache_period = await self._fetch_well_known(
-                    server_name
-                )  # type: Optional[bytes], float
+                result: Optional[bytes]
+                cache_period: float
+
+                result, cache_period = await self._fetch_well_known(server_name)
 
         except _FetchWellKnownFailure as e:
             if prev_result and e.temporary: