diff --git a/README.markdown b/README.markdown
--- a/README.markdown
+++ b/README.markdown
@@ -33,7 +33,7 @@
 # Get involved!
 
 Please report bugs via the
-[bitbucket issue tracker](http://bitbucket.org/bos/attoparsec/statistics).
+[bitbucket issue tracker](http://bitbucket.org/bos/statistics/issues).
 
 Master [Mercurial repository](http://bitbucket.org/bos/statistics):
 
diff --git a/Statistics/Function.hs b/Statistics/Function.hs
--- a/Statistics/Function.hs
+++ b/Statistics/Function.hs
@@ -24,15 +24,14 @@
 
 import Control.Exception (assert)
 import Control.Monad.Primitive (PrimMonad)
-import Data.Vector.Algorithms.Combinators (apply)
-import Data.Vector.Generic (unsafeFreeze)
+import Data.Vector.Generic (modify, unsafeFreeze)
 import qualified Data.Vector.Algorithms.Intro as I
 import qualified Data.Vector.Generic as G
 import qualified Data.Vector.Generic.Mutable as M
 
 -- | Sort a vector.
 sort :: (Ord e, G.Vector v e) => v e -> v e
-sort = apply I.sort
+sort = modify I.sort
 {-# INLINE sort #-}
 
 -- | Partially sort a vector, such that the least /k/ elements will be
@@ -41,7 +40,7 @@
                Int -- ^ The number /k/ of least elements.
             -> v e
             -> v e
-partialSort k = apply (\a -> I.partialSort a k)
+partialSort k = modify (\a -> I.partialSort a k)
 {-# INLINE partialSort #-}
 
 -- | Return the indices of a vector.
diff --git a/Statistics/Sample/Powers.hs b/Statistics/Sample/Powers.hs
--- a/Statistics/Sample/Powers.hs
+++ b/Statistics/Sample/Powers.hs
@@ -82,7 +82,7 @@
        -> Powers
 powers k
     | k < 2     = error "Statistics.Sample.powers: too few powers"
-    | otherwise = fini . G.foldl' go (unsafePerformIO $ MU.newWith l 0)
+    | otherwise = fini . G.foldl' go (unsafePerformIO $ MU.replicate l 0)
   where
     go ms x = inlinePerformIO $ loop 0 1
         where loop !i !xk | i == l = return ms
diff --git a/statistics.cabal b/statistics.cabal
--- a/statistics.cabal
+++ b/statistics.cabal
@@ -1,5 +1,5 @@
 name:           statistics
-version:        0.8.0.3
+version:        0.8.0.4
 synopsis:       A library of statistical types, data, and functions
 description:
   This library provides a number of common functions and types useful
@@ -63,8 +63,8 @@
     mwc-random >= 0.7.0.0,
     primitive >= 0.3,
     time,
-    vector >= 0.6.0.2,
-    vector-algorithms >= 0.3.2
+    vector >= 0.7.0.0,
+    vector-algorithms >= 0.4
   if impl(ghc >= 6.10)
     build-depends:
       base >= 4