diff --git a/Data/Bifunctor/Flip.hs b/Data/Bifunctor/Flip.hs
--- a/Data/Bifunctor/Flip.hs
+++ b/Data/Bifunctor/Flip.hs
@@ -6,4 +6,4 @@
 type Flip = Dual
 
 pattern Flip :: f a b -> Dual f b a
-pattern Flip { flip } = Dual flip
+pattern Flip { unFlip } = Dual unFlip
diff --git a/dual.cabal b/dual.cabal
--- a/dual.cabal
+++ b/dual.cabal
@@ -1,5 +1,5 @@
 name:                dual
-version:             0.1.1.0
+version:             0.1.1.1
 synopsis:            Dual category
 -- description:         
 license:             BSD3