diff --git a/Test/BenchPress.hs b/Test/BenchPress.hs
--- a/Test/BenchPress.hs
+++ b/Test/BenchPress.hs
@@ -62,7 +62,7 @@
 
 import Control.Exception (bracket)
 import Control.Monad (forM, forM_)
-import Data.List (intercalate, sort)
+import Data.List (intersperse, sort)
 import Data.Time.Clock (NominalDiffTime, diffUTCTime, getCurrentTime)
 import qualified Math.Statistics as Math
 import Prelude hiding (max, min)
@@ -182,7 +182,8 @@
 
 -- | Prints a summary row for each benchmark with an associated label.
 -- The summary contains the same statistics as in 'printDetailedStats'
--- except for the execution time percentiles.
+-- except for the execution time percentiles.  Writes output to
+-- standard output.
 printStatsSummaries :: [(String, Stats)] -> IO ()
 printStatsSummaries rows = do
   printSummaryHeader lblLen colWidth
@@ -252,3 +253,6 @@
 -- | Converts seconds to milliseconds.
 secsToMillis :: NominalDiffTime -> Double
 secsToMillis t = realToFrac t * (10^(3 :: Int))
+
+intercalate :: [a] -> [[a]] -> [a]
+intercalate xs = concat . intersperse xs
diff --git a/benchpress.cabal b/benchpress.cabal
--- a/benchpress.cabal
+++ b/benchpress.cabal
@@ -1,5 +1,5 @@
 name:           benchpress
-version:        0.2.2
+version:        0.2.2.1
 synopsis:       Micro-benchmarking with detailed statistics.
 Description:    Benchmarks actions and produces statistics
                 such as min, mean, median, standard deviation,
@@ -19,8 +19,8 @@
 
   other-modules:  Math.Statistics
 
-  build-depends:  base >= 2.1 && < 3.1,
+  build-depends:  base >= 2.0 && < 3.1,
                   mtl >= 1 && < 1.2,
-                  time >= 1.1 && < 1.2
+                  time >= 1.0 && < 1.2
 
   ghc-options:  -funbox-strict-fields -Wall