diff --git a/changelog b/changelog
new file mode 100644
--- /dev/null
+++ b/changelog
@@ -0,0 +1,1 @@
+See https://github.com/hspec/hspec/blob/master/CHANGES.markdown
diff --git a/hspec.cabal b/hspec.cabal
--- a/hspec.cabal
+++ b/hspec.cabal
@@ -1,5 +1,5 @@
 name:             hspec
-version:          1.9.3
+version:          1.9.4
 license:          MIT
 license-file:     LICENSE
 copyright:        (c) 2011-2014 Simon Hengel,
@@ -22,8 +22,10 @@
                   .
                   The Hspec Manual is at <http://hspec.github.io/>.
 
--- find hspec-discover/test-data/ -type f
 extra-source-files:
+  changelog
+
+-- find hspec-discover/test-data/ -type f
   hspec-discover/test-data/nested-spec/FooSpec.hs
   hspec-discover/test-data/nested-spec/Foo/Bar/BazSpec.hs
   hspec-discover/test-data/nested-spec/Foo/BarSpec.hs
@@ -45,7 +47,7 @@
     , setenv
     , ansi-terminal >= 0.5
     , time
-    , transformers  >= 0.2.2.0 && < 0.4.0
+    , transformers  >= 0.2.2.0
     , deepseq
     , HUnit         >= 1.2.5
     , QuickCheck    >= 2.5.1
diff --git a/src/Test/Hspec/Compat.hs b/src/Test/Hspec/Compat.hs
--- a/src/Test/Hspec/Compat.hs
+++ b/src/Test/Hspec/Compat.hs
@@ -10,6 +10,10 @@
 #endif
 ) where
 
+#if !MIN_VERSION_base(4,3,0)
+import           Control.Monad.Trans.Error () -- for Monad (Either e)
+#endif
+
 import           Data.Typeable (Typeable, typeOf, typeRepTyCon)
 import           Text.Read
 import           Data.IORef
diff --git a/src/Test/Hspec/Config.hs b/src/Test/Hspec/Config.hs
--- a/src/Test/Hspec/Config.hs
+++ b/src/Test/Hspec/Config.hs
@@ -15,9 +15,6 @@
 import           Test.Hspec.Formatters
 
 import           Test.Hspec.Util
-
-import           Control.Monad.Trans.Error () -- for Monad (Either e) when base < 4.3
-
 import           Test.Hspec.Options
 import           Test.Hspec.FailureReport
 import           Test.Hspec.Core.QuickCheckUtil (mkGen)
diff --git a/src/Test/Hspec/Options.hs b/src/Test/Hspec/Options.hs
--- a/src/Test/Hspec/Options.hs
+++ b/src/Test/Hspec/Options.hs
@@ -11,13 +11,10 @@
 import           Data.List
 import           System.Exit
 import           System.Console.GetOpt
-import           Test.Hspec.Formatters
 
+import           Test.Hspec.Formatters
 import           Test.Hspec.Compat
 import           Test.Hspec.Util
-
--- for Monad (Either e) when base < 4.3
-import           Control.Monad.Trans.Error ()
 
 data Options = Options {
   optionsDryRun       :: Bool
diff --git a/src/Test/Hspec/Runner/Eval.hs b/src/Test/Hspec/Runner/Eval.hs
--- a/src/Test/Hspec/Runner/Eval.hs
+++ b/src/Test/Hspec/Runner/Eval.hs
@@ -18,8 +18,8 @@
 import           Data.Time.Clock.POSIX
 
 data Tree a
-  = Node! String [Tree a]
-  | Leaf! String a
+  = Node !String [Tree a]
+  | Leaf !String a
   deriving (Eq, Show, Functor)
 
 toTree :: SpecTree -> Tree Item