diff --git a/datastore/datastore.nim b/datastore/datastore.nim
index 3e90814..169349a 100644
--- a/datastore/datastore.nim
+++ b/datastore/datastore.nim
@@ -31,7 +31,7 @@ method put*(self: Datastore, key: Key, data: seq[byte]): Future[?!void] {.base,
 method put*(self: Datastore, batch: seq[BatchEntry]): Future[?!void] {.base, locks: "unknown".} =
   raiseAssert("Not implemented!")
 
-method close*(self: Datastore): Future[?!void] {.base, async, locks: "unknown".} =
+method close*(self: Datastore): Future[?!void] {.base, locks: "unknown".} =
   raiseAssert("Not implemented!")
 
 # method query*(