diff --git a/src/Postlude.hs b/src/Postlude.hs
index 62b3a99..94e15f7 100644
--- a/src/Postlude.hs
+++ b/src/Postlude.hs
@@ -19,9 +19,12 @@ import Control.Arrow as X
   , (>>>)
   , (|||)
   , Arrow
+  , ArrowChoice
   , arr
   , first
+  , left
   , returnA
+  , right
   , second
   )