diff --git a/Castle.hs b/Castle.hs
--- a/Castle.hs
+++ b/Castle.hs
@@ -156,13 +156,13 @@
 pinfo p desc imod = info (helper <*> p) (fullDesc <> progDesc desc <> imod)
 
 textOption :: Mod OptionFields T.Text -> Parser T.Text
-textOption fields = nullOption (reader (pure . T.pack) <> fields)
+textOption fields = option (T.pack <$> str) fields
 
 fileOption :: Mod OptionFields FilePath -> Parser FilePath
-fileOption fields = nullOption (reader (pure . decodeString) <> fields)
+fileOption fields = option (decodeString <$> str) fields
 
 textArg :: String -> String -> Parser T.Text
-textArg meta helpText = argument (Just . T.pack) (metavar meta <> help helpText)
+textArg meta helpText = argument (T.pack <$> str) (metavar meta <> help helpText)
 
 castleNameArg :: String -> Parser T.Text
 castleNameArg = textArg "CASTLE_NAME"
diff --git a/castle.cabal b/castle.cabal
--- a/castle.cabal
+++ b/castle.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                castle
-version:             0.1.0.0
+version:             0.1.0.1
 synopsis:            A tool to manage shared cabal-install sandboxes.
 description:
   I really like having sandboxes baked into cabal-install.
@@ -38,32 +38,15 @@
   main-is:             Castle.hs
   -- other-modules:       
   -- other-extensions:    
-  build-depends:       base >=4.6 && <4.7
+  build-depends:       base >=4.6 && <5
                      -- , cabal-install >=1.18.0
                      , shelly
-                     , errors
                      , system-filepath
                      , system-fileio
-                     , lens
-                     , configurator
-                     , optparse-applicative
+                     , optparse-applicative >=0.10 && <0.12
                      , text
                      , containers
   -- hs-source-dirs:      
-  default-language:    Haskell2010
-
-test-suite castle-specs
-  type:                exitcode-stdio-1.0
-  ghc-options:         -threaded -rtsopts
-  hs-source-dirs:      specs
-  main-is:             Specs.hs
-  build-depends:         base       == 4.6.*
-                       , tasty
-                       , tasty-golden
-                       , tasty-quickcheck
-                       , tasty-hspec
-                       , hspec
-                       , QuickCheck
   default-language:    Haskell2010
 
 source-repository this
diff --git a/specs/Specs.hs b/specs/Specs.hs
deleted file mode 100644
--- a/specs/Specs.hs
+++ /dev/null
@@ -1,22 +0,0 @@
-
-
-module Main where
-
-
-import Test.Tasty
--- import Test.Tasty.QuickCheck as QC
--- import Test.Tasty.HUnit as HU
--- import Test.Tasty.Golden as TG
-import Test.Tasty.Hspec
-
-
-specs :: Spec
-specs = undefined
-
-tests :: TestTree
-tests = testGroup "main"
-    [ testCase "something" specs
-    ]
-
-main = defaultMain tests
-