diff --git a/Crypto/Internal/Imports.hs b/Crypto/Internal/Imports.hs
index 4c125c3..1edcb38 100644
--- a/Crypto/Internal/Imports.hs
+++ b/Crypto/Internal/Imports.hs
@@ -13,3 +13,4 @@ module Crypto.Internal.Imports
 import Data.Word           as X
 import Control.Applicative as X
 import Control.Monad       as X (forM, forM_, void)
+import Control.Arrow       as X (first, second)