diff --git a/Main.hs b/Main.hs
--- a/Main.hs
+++ b/Main.hs
@@ -1,8 +1,12 @@
+{-# language CPP #-}
 module Main where
 
 import qualified Data.Map as Map
 import Distribution.Hackage.DB.Parsed
-import Distribution.Package (PackageName(..), PackageIdentifier(PackageIdentifier, pkgName, pkgVersion))
+#if MIN_VERSION_hackage_db(2,0,0)
+import Distribution.Hackage.DB.Path
+#endif
+import Distribution.Package (PackageName, PackageIdentifier(PackageIdentifier, pkgName, pkgVersion), unPackageName)
 import Distribution.PackageDescription (GenericPackageDescription(packageDescription), PackageDescription(package))
 import Distribution.PackageDescription.Parse (readPackageDescription)
 import Distribution.Simple.Utils (defaultPackageDesc)
@@ -21,18 +25,30 @@
 local v =
   fmap packageDescription (readPackageDescription v =<< defaultPackageDesc v)
 
+#if MIN_VERSION_hackage_db(2,0,0)
+readHackage = hackageTarball >>= readTarball Nothing
+#endif
+
 -- | get the package description from hackage
 --
 -- This gets the latest version available.
 hackage :: PackageName -- ^ the package name
         -> IO (Maybe PackageDescription)
-hackage (PackageName pn) = do
+hackage pn = do
   hackage <- readHackage
+#if MIN_VERSION_hackage_db(2,0,0)
   case Map.lookup pn hackage of
+#else
+  case Map.lookup (unPackageName pn) hackage of
+#endif
     Nothing ->
       return Nothing
     (Just gpdMap) ->
+#if MIN_VERSION_hackage_db(2,0,0)
+      return $ Just $ packageDescription (cabalFile $ snd $ head $ Map.toDescList gpdMap)
+#else
       return $ Just $ packageDescription (snd $ head $ Map.toDescList gpdMap)
+#endif
 
 -- | calculate the directory to the tarball for `PackageIndentifier`
 packageDir :: FilePath -> PackageIdentifier -> FilePath
@@ -49,7 +65,7 @@
 -- returns path to downloaded `.tar.gz`
 fetchFromHackage :: PackageIdentifier
                  -> IO FilePath
-fetchFromHackage pi@(PackageIdentifier (PackageName pn) version) = do
+fetchFromHackage pi@(PackageIdentifier _ version) = do
   (ec, out, err) <- readProcessWithExitCode "cabal" ["fetch", "--no-dependencies", display pi] ""
   case ec of
     ExitSuccess -> do
diff --git a/hackage-whatsnew.cabal b/hackage-whatsnew.cabal
--- a/hackage-whatsnew.cabal
+++ b/hackage-whatsnew.cabal
@@ -1,5 +1,5 @@
 name:                hackage-whatsnew
-version:             0.1.0.1
+version:             0.1.0.2
 synopsis:            Check for differences between working directory and hackage
 description:         This tool checks to see if the package in a local working directory
                      has changes which are not yet on hackage. This is useful to check if
@@ -12,7 +12,7 @@
 homepage:            https://github.com/stepcut/hackage-whatsnew
 build-type:          Simple
 cabal-version:       >=1.10
-tested-with:         GHC == 7.6.3, GHC == 7.8.4, GHC == 7.10.3, GHC == 8.0.1
+tested-with:         GHC == 7.10.3, GHC == 8.0.2, GHC == 8.2.2
 extra-source-files:  README.md
 
 source-repository head
@@ -22,11 +22,11 @@
 executable hackage-whatsnew
   main-is:             Main.hs
   build-depends:       base >=4.6 && < 5.0,
-                       Cabal >= 1.16 && < 1.25,
+                       Cabal >= 1.16 && < 2.1,
                        containers >=0.5 && <0.6,
-                       directory >= 1.2 && < 1.3,
-                       filepath >= 1.4 && < 1.5,
-                       hackage-db >= 1.22 && < 1.23,
-                       process >= 1.2 && < 1.5,
+                       directory >= 1.2 && < 1.4,
+                       filepath >= 1.3 && < 1.5,
+                       hackage-db >= 1.22 && < 2.1,
+                       process >= 1.1 && < 1.7,
                        temporary >= 1.2 && < 1.3
   default-language:    Haskell2010