diff --git a/src/Vervis/RemoteActorStore.hs b/src/Vervis/RemoteActorStore.hs
index 09e020b..1da82d3 100644
--- a/src/Vervis/RemoteActorStore.hs
+++ b/src/Vervis/RemoteActorStore.hs
@@ -503,6 +503,7 @@ fetchRemoteActor
        , PersistUniqueRead (YesodPersistBackend site)
        , BaseBackend (YesodPersistBackend site) ~ SqlBackend
        , YesodRemoteActorStore site
+       , MonadUnliftIO m
        , MonadSite m
        , SiteEnv m ~ site
        , Site site