diff --git a/metrics.cabal b/metrics.cabal
--- a/metrics.cabal
+++ b/metrics.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                metrics
-version:             0.1.0.0
+version:             0.2.0.0
 synopsis:            High-performance application metric tracking
 description:
   A port of Coda Hale's excellent metrics library for the JVM
@@ -53,7 +53,7 @@
 
   -- other-modules:       
   -- other-extensions:    
-  build-depends:       base >=4.6 && <4.7,
+  build-depends:       base < 5,
                        unordered-containers,
                        text,
                        mtl,
@@ -64,8 +64,9 @@
                        vector-algorithms,
                        containers,
                        time,
-                       lens >= 3.10 && < 4,
-                       ansi-terminal >= 0.6 && < 0.7
+                       lens,
+                       ansi-terminal,
+                       bytestring
   hs-source-dirs:      src
   default-language:    Haskell2010
 
@@ -74,13 +75,13 @@
   -- other-modules:       CounterTest, ExponentiallyDecayingReservoirTest, GaugeTest, HistogramTest, MeterTest, RegistryTest, TimerTest
   hs-source-dirs:      tests
   type:                exitcode-stdio-1.0
-  build-depends:       base >= 4.6 && <5,
+  build-depends:       base,
                        metrics,
                        async,
-                       mwc-random >= 0.13,
+                       mwc-random,
                        unix,
                        QuickCheck,
                        primitive,
-                       lens >= 3.10 && < 4
+                       lens
   default-language:    Haskell2010
   ghc-options:         -rtsopts -threaded -with-rtsopts=-N
diff --git a/src/Data/HealthCheck.hs b/src/Data/HealthCheck.hs
--- a/src/Data/HealthCheck.hs
+++ b/src/Data/HealthCheck.hs
@@ -57,3 +57,4 @@
 -- | Create a health check.
 healthCheck :: Text -> IO StatusReport -> HealthCheck
 healthCheck = flip HealthCheck
+
diff --git a/src/Data/Metrics.hs b/src/Data/Metrics.hs
--- a/src/Data/Metrics.hs
+++ b/src/Data/Metrics.hs
@@ -28,9 +28,6 @@
 import Data.Metrics.Timer
 import Data.Metrics.Types
 
---newMetricRegistry :: IO (MetricRegistry IO)
---newMetricRegistry = fmap MetricRegistry $ newMVar H.empty
-
 {-
 getOrInit :: (Typeable a, MetricOutput a) => MetricRegistry -> Text -> a -> IO (Maybe (IORef a))
 getOrInit r name conv defaultValue = do
diff --git a/src/Data/Metrics/Registry.hs b/src/Data/Metrics/Registry.hs
--- a/src/Data/Metrics/Registry.hs
+++ b/src/Data/Metrics/Registry.hs
@@ -4,6 +4,8 @@
   MetricRegistry,
   Metric(..),
   Register(..),
+  metrics,
+  newMetricRegistry,
   module Data.Metrics.Types
 ) where
 import Control.Concurrent.MVar
@@ -15,6 +17,10 @@
 import Data.Metrics.Timer
 import Data.Metrics.Types
 import Data.Text (Text)
+
+-- | Initializes a new metric registry.
+newMetricRegistry :: IO (MetricRegistry IO)
+newMetricRegistry = fmap MetricRegistry $ newMVar H.empty
 
 -- | A container that tracks all metrics registered with it.
 -- All forms of metrics share the same namespace in the registry.