diff --git a/Linux/Arch/Aur/Rpc.hs b/Linux/Arch/Aur/Rpc.hs
--- a/Linux/Arch/Aur/Rpc.hs
+++ b/Linux/Arch/Aur/Rpc.hs
@@ -2,7 +2,7 @@
 
 -- |
 -- Module    : Linux.Arch.Aur.Rpc
--- Copyright : (c) Colin Woodbury, 2014,2015
+-- Copyright : (c) Colin Woodbury, 2014, 2015
 -- License   : GPL3
 -- Maintainer: Colin Woodbury <colingw@gmail.com>
 
@@ -28,7 +28,7 @@
        , searchJ'
        , msearchJ'
        -- * Pretty JSON
-       , pretty) where
+       , pretty ) where
 
 import           Linux.Arch.Aur.Types
 
@@ -49,9 +49,6 @@
 aurUrl :: String
 aurUrl = "https://aur.archlinux.org/rpc.php?"
 
-aur4Url :: String
-aur4Url = "https://aur4.archlinux.org/rpc.php?"
-
 -- | Returns all information about one package.
 info :: MonadIO m => Text -> m (Maybe AurInfo)
 info p = (>>= extract) <$> infoJ p
@@ -76,15 +73,15 @@
 
 -- | `multiinfo` call as Haskellised JSON.
 multiinfoJ :: MonadIO m => [Text] -> m (Maybe Value)
-multiinfoJ ps = multiinfoJ' ps aur4Url "4"
+multiinfoJ ps = multiinfoJ' ps aurUrl "4"
 
 -- | `search` call as Haskellised JSON.
 searchJ :: MonadIO m => Text -> m (Maybe Value)
-searchJ s = searchJ' s aur4Url "4"
+searchJ s = searchJ' s aurUrl "4"
 
 -- | `msearch` call as Haskellised JSON.
 msearchJ :: MonadIO m => Text -> m (Maybe Value)
-msearchJ m = msearchJ' m aur4Url "4"
+msearchJ m = msearchJ' m aurUrl "4"
 
 -- | `info` with explicit RPC endpoint and API version.
 info' :: MonadIO m => Text -> String -> Text -> m (Maybe AurInfo)
diff --git a/Linux/Arch/Aur/Types.hs b/Linux/Arch/Aur/Types.hs
--- a/Linux/Arch/Aur/Types.hs
+++ b/Linux/Arch/Aur/Types.hs
@@ -2,7 +2,7 @@
 
 -- |
 -- Module    : Linux.Arch.Aur.Types
--- Copyright : (c) Colin Woodbury, 2014,2015
+-- Copyright : (c) Colin Woodbury, 2014, 2015
 -- License   : GPL3
 -- Maintainer: Colin Woodbury <colingw@gmail.com>
 
@@ -25,7 +25,7 @@
                        , urlOf            :: Text
                        , aurVotesOf       :: Int
                        , popularityOf     :: Float
-                       , isOutOfDate      :: Bool
+                       , dateObsoleteOf   :: Maybe Int
                        , aurMaintainerOf  :: Maybe Text
                        , submissionDatOf  :: Int
                        , modifiedDateOf   :: Int
@@ -48,7 +48,7 @@
                            v .:  "URL"                <*>
                            v .:  "NumVotes"           <*>
                            v .:  "Popularity"         <*>
-                           (f <$> (v .: "OutOfDate")) <*>
+                           v .:? "OutOfDate"          <*>
                            v .:? "Maintainer"         <*>
                            v .:  "FirstSubmitted"     <*>
                            v .:  "LastModified"       <*>
diff --git a/aur.cabal b/aur.cabal
--- a/aur.cabal
+++ b/aur.cabal
@@ -4,7 +4,7 @@
 -- The name of the package.
 name:                aur
 
-version:             3.0.0
+version:             4.0.0
 
 synopsis:            Access metadata from the Arch Linux User Repository.