diff --git a/reflex-vty.cabal b/reflex-vty.cabal
index 8a6dc92..fbbb42c 100644
--- a/reflex-vty.cabal
+++ b/reflex-vty.cabal
@@ -12,6 +12,7 @@ cabal-version: >=1.10
 
 library
   exposed-modules: Reflex.Vty
+  other-modules: Reflex.Spider.Orphans
   build-depends:
     base,
     dependent-sum,
diff --git a/src/Reflex/Spider/Orphans.hs b/src/Reflex/Spider/Orphans.hs
new file mode 100644
index 0000000..2d8b3b6
--- /dev/null
+++ b/src/Reflex/Spider/Orphans.hs
@@ -0,0 +1,17 @@
+{-# LANGUAGE FlexibleInstances #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
+{-# OPTIONS_GHC -fno-warn-orphans #-}
+module Reflex.Spider.Orphans where
+
+import Reflex
+import Reflex.NotReady.Class
+import Reflex.Spider.Internal
+
+-- TODO move this to reflex
+instance NotReady (SpiderTimeline x) (SpiderHost x) where
+  notReadyUntil _ = pure ()
+  notReady = pure ()
+
+instance HasSpiderTimeline x => NotReady (SpiderTimeline x) (PerformEventT (SpiderTimeline x) (SpiderHost x)) where
+  notReadyUntil _ = pure ()
+  notReady = pure ()
diff --git a/src/Reflex/Vty.hs b/src/Reflex/Vty.hs
index 8a3444a..10d3a16 100644
--- a/src/Reflex/Vty.hs
+++ b/src/Reflex/Vty.hs
@@ -1,4 +1,5 @@
 {-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE RankNTypes #-}
@@ -27,6 +28,8 @@ import Data.Maybe (catMaybes)
 
 import Reflex
 import Reflex.Host.Class
+import Reflex.NotReady.Class
+import Reflex.Spider.Orphans ()
 import qualified Graphics.Vty as V
 
 -- | The output of a 'VtyApp'.
@@ -49,6 +52,7 @@ type VtyApp t m =
   , Ref m ~ IORef
   , Ref (HostFrame t) ~ IORef
   , MonadRef (HostFrame t)
+  , NotReady t (PerformEventT t m)
   )
   => Event t (V.Event)
   -- ^ Vty input events.