diff --git a/Test/BenchPress.hs b/Test/BenchPress.hs
--- a/Test/BenchPress.hs
+++ b/Test/BenchPress.hs
@@ -109,7 +109,7 @@
           elapsed <- bracket setup teardown $ \a -> do
             startWall <- getCurrentTime
             startCpu <- getCPUTime
-            action a
+            _ <- action a
             endCpu <- getCPUTime
             endWall <- getCurrentTime
             return (picosToMillis $! endCpu - startCpu
diff --git a/benchpress.cabal b/benchpress.cabal
--- a/benchpress.cabal
+++ b/benchpress.cabal
@@ -1,5 +1,5 @@
 name:           benchpress
-version:        0.2.2.4
+version:        0.2.2.5
 synopsis:       Micro-benchmarking with detailed statistics.
 Description:    Benchmarks actions and produces statistics
                 such as min, mean, median, standard deviation,
@@ -20,8 +20,8 @@
 
   other-modules:  Math.Statistics
 
-  build-depends:  base >= 2.0 && < 4.4,
+  build-depends:  base >= 2.0 && < 4.6,
                   mtl >= 1 && < 2.1,
-                  time >= 1 && < 1.2
+                  time >= 1 && < 1.5
 
   ghc-options:  -funbox-strict-fields -Wall