diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+0.8.0
+-----
+* Migrate from EitherT to ExceptT
+
 0.7.1
 -----
 * Raise upper bounds of lens, Cabal and either
diff --git a/cabal-lenses.cabal b/cabal-lenses.cabal
--- a/cabal-lenses.cabal
+++ b/cabal-lenses.cabal
@@ -1,18 +1,18 @@
-name: cabal-lenses
-version: 0.7.1
 cabal-version: >=1.9.2
-build-type: Simple
+name: cabal-lenses
+version: 0.8.0
 license: BSD3
 license-file: LICENSE
 maintainer: daniel.trstenjak@gmail.com
+author: Daniel Trstenjak
+tested-with: ghc ==7.6.2 ghc ==7.6.3 ghc ==7.8.3 ghc ==7.10.1
+             ghc ==8.0.1 ghc ==8.2.1 ghc ==8.4.2
 synopsis: Lenses and traversals for the Cabal library.
 description:
     Lenses and traversals (compatible with the <https://hackage.haskell.org/package/lens lens> library) for
     the <https://hackage.haskell.org/package/Cabal Cabal> library.
 category: Utils, Development
-author: Daniel Trstenjak
-tested-with: GHC ==7.6.2 GHC ==7.6.3 GHC ==7.8.3 GHC ==7.10.1
-             GHC ==8.0.1 GHC ==8.2.1 GHC ==8.4.2
+build-type: Simple
 extra-source-files:
     README.md
     CHANGELOG
@@ -32,21 +32,19 @@
         CabalLenses.Traversals.BuildInfo
         CabalLenses.Traversals.Dependency
         CabalLenses.Utils
+    cpp-options: -DCABAL
+    hs-source-dirs: lib
+    other-modules:
+        CabalLenses.Traversals.Internal
+        Paths_cabal_lenses
+    ghc-options: -W
     build-depends:
         base >=3 && <5,
         lens >=4.0.1 && <4.17,
         unordered-containers >=0.2.3.3 && <0.3,
         Cabal >=2.1.0.0 && <2.3,
-        either >=4.1.1 && <4.6,
         system-filepath >=0.4.9 && <0.5,
         system-fileio >=0.3.12 && <0.4,
         strict >=0.3.2 && <0.4,
         text >=1.1.0.1 && <1.3,
         transformers >=0.3.0.0 && <0.6
-    cpp-options: -DCABAL
-    hs-source-dirs: lib
-    other-modules:
-        CabalLenses.Traversals.Internal
-        Paths_cabal_lenses
-    ghc-options: -W
-
diff --git a/lib/CabalLenses/Utils.hs b/lib/CabalLenses/Utils.hs
--- a/lib/CabalLenses/Utils.hs
+++ b/lib/CabalLenses/Utils.hs
@@ -7,7 +7,7 @@
    , findNewDistDir
    ) where
 
-import Control.Monad.Trans.Either (EitherT, left, right)
+import Control.Monad.Trans.Except (ExceptT, throwE)
 import Control.Monad.IO.Class
 import Control.Monad (filterM)
 import qualified System.IO.Strict as Strict
@@ -28,15 +28,15 @@
 
 -- | Find a cabal file starting at the given directory, going upwards the directory
 --   tree until a cabal file could be found. The returned file path is absolute.
-findCabalFile :: FilePath -> EitherT Error IO FilePath
+findCabalFile :: FilePath -> ExceptT Error IO FilePath
 findCabalFile file = do
    cabalFile <- io $ do
       dir <- absoluteDirectory file
       findCabalFile' dir
 
    if cabalFile == FP.empty
-      then left "Couldn't find Cabal file!"
-      else right . FP.encodeString $ cabalFile
+      then throwE "Couldn't find Cabal file!"
+      else return $ FP.encodeString cabalFile
 
    where
       findCabalFile' dir = do
@@ -61,7 +61,7 @@
 
 -- | Find the package database of the cabal sandbox from the given cabal file.
 --   The returned file path is absolute.
-findPackageDB :: FilePath -> EitherT Error IO (Maybe FilePath)
+findPackageDB :: FilePath -> ExceptT Error IO (Maybe FilePath)
 findPackageDB cabalFile = do
    cabalDir <- io $ absoluteDirectory cabalFile
    let sandboxConfig = cabalDir </> sandbox_config
@@ -70,10 +70,10 @@
       then do
          packageDB <- io $ readPackageDB sandboxConfig
          case packageDB of
-              Just db -> right . Just $ db
-              _       -> left $ "Couldn't find field 'package-db: ' in " ++ (show sandboxConfig)
+              Just db -> return $ Just db
+              _       -> throwE $ "Couldn't find field 'package-db: ' in " ++ (show sandboxConfig)
       else
-         right Nothing
+         return Nothing
 
    where
       -- | reads the 'package-db: ' field from the sandbox config file and returns the value of the field