diff --git a/Weather.cabal b/Weather.cabal
--- a/Weather.cabal
+++ b/Weather.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                Weather
-version:             0.1.0.2
+version:             0.1.0.3
 synopsis:            Library for interacting with the Weather Underground JSON API.
 description: Weather is a simple library for interacting with the Weather Underground JSON API. It is not complete, but it may be useful still.
 homepage:            https://github.com/bstamour/weather
diff --git a/Weather.cabal~ b/Weather.cabal~
--- a/Weather.cabal~
+++ b/Weather.cabal~
@@ -20,7 +20,7 @@
   exposed-modules:     Net.Weather
   -- other-modules:
   -- other-extensions:
-  build-depends: base >= 4.7.0
+  build-depends: base == 4.*
                , HTTP >= 4000.2.12
                , text >= 1.1.0
                , unordered-containers >= 0.2.5
diff --git a/src/Net/Weather.hs b/src/Net/Weather.hs
--- a/src/Net/Weather.hs
+++ b/src/Net/Weather.hs
@@ -39,8 +39,14 @@
 -- | API key. Obtain yours at http://wunderground.com.
 type APIKey = String
 
+-- | City name (e.g. Detroit).
+type City = String
+
+-- | State abbreviation (e.g. MI for Michigan).
+type State = String
+
 -- | Get the current weather conditions of a city.
-getConditions :: APIKey -> String -> String -> IO (Maybe Observation)
+getConditions :: APIKey -> City -> State -> IO (Maybe Observation)
 getConditions key city state = do
   obj <- evalJSONRequest $ conditionsQuery key city state
   return $ obj >>= getProperty "current_observation"
diff --git a/src/Net/Weather.hs~ b/src/Net/Weather.hs~
--- a/src/Net/Weather.hs~
+++ b/src/Net/Weather.hs~
@@ -1,6 +1,6 @@
 {-# LANGUAGE OverloadedStrings #-}
 
-module Web.Weather
+module Net.Weather
        ( Observation(..)
        , APIKey
        , getConditions