diff --git a/Data/Vector/Instances.hs b/Data/Vector/Instances.hs
--- a/Data/Vector/Instances.hs
+++ b/Data/Vector/Instances.hs
@@ -1,4 +1,5 @@
 {-# LANGUAGE TypeFamilies #-}
+{-# LANGUAGE MultiParamTypeClasses #-}
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  Data.Vector.Instances
@@ -28,11 +29,21 @@
 import Data.Vector.Fusion.Stream.Size
 import Data.Vector (Vector,(++),drop,length,imap,ifoldr, ifoldl, izipWith,(!?),(//), generate)
 import qualified Data.Vector as Vector
+import Control.Lens hiding (Indexable)
 
 type instance Key Vector = Int
 
+instance FunctorWithIndex Int Vector where
+  imap = Vector.imap
+
+instance FoldableWithIndex Int Vector where
+  ifoldMap f = Vector.ifoldr (\i -> mappend . f i) mempty
+
+instance TraversableWithIndex Int Vector where
+  itraverse = withIndex (indexed traverse)
+
 instance Keyed Vector where
-  mapWithKey = imap
+  mapWithKey = Vector.imap
   {-# INLINE mapWithKey #-}
 
 instance Zip Vector where
@@ -61,9 +72,9 @@
   {-# INLINE replace #-}
 
 instance FoldableWithKey Vector where
-  foldrWithKey = ifoldr
+  foldrWithKey = Vector.ifoldr
   {-# INLINE foldrWithKey #-}
-  foldlWithKey = ifoldl
+  foldlWithKey = Vector.ifoldl
   {-# INLINE foldlWithKey #-}
 
 instance Apply Vector where
diff --git a/vector-instances.cabal b/vector-instances.cabal
--- a/vector-instances.cabal
+++ b/vector-instances.cabal
@@ -1,5 +1,5 @@
 name:                vector-instances
-version:             3.0
+version:             3.1
 synopsis:            Orphan Instances for 'Data.Vector'
 homepage:            http://github.com/ekmett/vector-instances
 bug-reports:         http://github.com/ekmett/vector-instances/issues
@@ -25,9 +25,10 @@
 
   build-depends:
     base          >= 4       && < 5,
-    vector        >= 0.9     && < 0.10,
+    vector        >= 0.10    && < 0.11,
     semigroupoids >= 3.0     && < 3.1,
     semigroups    >= 0.8.3.1 && < 0.9,
+    lens          >= 3.2     && < 3.4,
     comonad       >= 3.0     && < 3.1,
     pointed       >= 3.0     && < 3.1,
     keys          >= 3.0     && < 3.1