1 files changed, 4 insertions, 2 deletions
diff --git a/synapse/storage/state.py b/synapse/storage/state.py
index d1d5859214..d4a1bd4f9d 100644
--- a/synapse/storage/state.py
+++ b/synapse/storage/state.py
@@ -62,7 +62,7 @@ class StateFilter:
     types: "frozendict[str, Optional[FrozenSet[str]]]"
     include_others: bool = False
 
-    def __attrs_post_init__(self):
+    def __attrs_post_init__(self) -> None:
         # If `include_others` is set we canonicalise the filter by removing
         # wildcards from the types dictionary
         if self.include_others:
@@ -138,7 +138,9 @@ class StateFilter:
         )
 
     @staticmethod
-    def freeze(types: Mapping[str, Optional[Collection[str]]], include_others: bool):
+    def freeze(
+        types: Mapping[str, Optional[Collection[str]]], include_others: bool
+    ) -> "StateFilter":
         """
         Returns a (frozen) StateFilter with the same contents as the parameters
         specified here, which can be made of mutable types.