1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/util/caches/lrucache.py b/synapse/util/caches/lrucache.py
index a3b60578e3..8ed5325c5d 100644
--- a/synapse/util/caches/lrucache.py
+++ b/synapse/util/caches/lrucache.py
@@ -109,7 +109,7 @@ GLOBAL_ROOT = ListNode["_Node"].create_root_node()
 
 @wrap_as_background_process("LruCache._expire_old_entries")
 async def _expire_old_entries(
-    clock: Clock, expiry_seconds: int, autotune_config: Optional[dict]
+    clock: Clock, expiry_seconds: float, autotune_config: Optional[dict]
 ) -> None:
     """Walks the global cache list to find cache entries that haven't been
     accessed in the given number of seconds, or if a given memory threshold has been breached.