1 files changed, 2 insertions, 0 deletions
diff --git a/scripts-dev/mypy_synapse_plugin.py b/scripts-dev/mypy_synapse_plugin.py
index 5882f3a0b0..f7f18805e4 100644
--- a/scripts-dev/mypy_synapse_plugin.py
+++ b/scripts-dev/mypy_synapse_plugin.py
@@ -31,6 +31,8 @@ class SynapsePlugin(Plugin):
     ) -> Optional[Callable[[MethodSigContext], CallableType]]:
         if fullname.startswith(
             "synapse.util.caches.descriptors._CachedFunction.__call__"
+        ) or fullname.startswith(
+            "synapse.util.caches.descriptors._LruCachedFunction.__call__"
         ):
             return cached_function_method_signature
         return None