diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,22 @@
 Changes
 =======
 
+Version 3.1.9
+-------------
+
+* Fix compilation with optparse-applicative 0.13.*.
+* Provide character-level diff if wdiff and colordiff are available.
+
+Version 3.1.8.1
+---------------
+
+* Fix compilation with GHC 8.
+
+Version 3.1.8
+-------------
+
+* Make update function optional for test cases.
+
 Version 3.1.7
 -------------
 
diff --git a/Test/Tasty/Silver/Interactive.hs b/Test/Tasty/Silver/Interactive.hs
--- a/Test/Tasty/Silver/Interactive.hs
+++ b/Test/Tasty/Silver/Interactive.hs
@@ -56,6 +56,7 @@
 import System.Process.ByteString as PS
 import System.Process
 import qualified Data.ByteString as BS
+import System.Directory
 import System.IO
 import System.IO.Temp
 import System.FilePath
@@ -179,27 +180,36 @@
 
 
 printDiff :: TestName -> GDiff -> IO ()
-printDiff n (DiffText _ tGold tAct) = withDiffEnv
+printDiff n (DiffText _ tGold tAct) = withDiffEnv n tGold tAct
   (\fGold fAct -> do
         (_, stdOut, _) <- PTL.readProcessWithExitCode "sh" ["-c", "git diff --no-index --text " ++ fGold ++ " " ++ fAct] T.empty
         TIO.putStrLn stdOut
 
   )
-  n tGold tAct
 printDiff _ (ShowDiffed _ t) = TIO.putStrLn t
 printDiff _ Equal = error "Can't print diff for equal values."
 
 showDiff :: TestName -> GDiff -> IO ()
-showDiff n (DiffText _ tGold tAct) = withDiffEnv
-  (\fGold fAct -> callProcess "sh"
-        ["-c", "git diff --color=always --no-index --text " ++ fGold ++ " " ++ fAct ++ " | less -r > /dev/tty"])
-  n tGold tAct
+showDiff n (DiffText _ tGold tAct) = do
+  hasColorDiff' <- hasColorDiff
+
+  withDiffEnv n tGold tAct
+    (if hasColorDiff' then colorDiff else gitDiff)
+  where
+    gitDiff fGold fAct = callProcess "sh"
+        ["-c", "git diff --color=always --no-index --text " ++ fGold ++ " " ++ fAct ++ " | less -r > /dev/tty"]
+
+    doesCmdExist cmd = isJust <$> findExecutable cmd
+
+    hasColorDiff = (&&) <$> doesCmdExist "wdiff" <*> doesCmdExist "colordiff"
+
+    colorDiff fGold fAct = callProcess "sh" ["-c", "wdiff " ++ fGold ++ " " ++ fAct ++ " | colordiff | less -r > /dev/tty"]
 showDiff n (ShowDiffed _ t) = showInLess n t
 showDiff _ Equal = error "Can't show diff for equal values."
 
 -- Stores the golden/actual text in two files, so we can use it for git diff.
-withDiffEnv :: (FilePath -> FilePath -> IO ()) -> TestName -> T.Text -> T.Text -> IO ()
-withDiffEnv cont n tGold tAct = do
+withDiffEnv :: TestName -> T.Text -> T.Text -> (FilePath -> FilePath -> IO ()) -> IO ()
+withDiffEnv n tGold tAct cont = do
   withSystemTempFile (n <.> "golden") (\fGold hGold -> do
     withSystemTempFile (n <.> "actual") (\fAct hAct -> do
       hSetBinaryMode hGold True
diff --git a/Test/Tasty/Silver/Internal.hs b/Test/Tasty/Silver/Internal.hs
--- a/Test/Tasty/Silver/Internal.hs
+++ b/Test/Tasty/Silver/Internal.hs
@@ -13,6 +13,7 @@
 import System.IO.Error
 import qualified Data.Text as T
 import Options.Applicative
+import Data.Monoid
 import Data.Tagged
 import Data.Proxy
 import Data.Maybe
diff --git a/tasty-silver.cabal b/tasty-silver.cabal
--- a/tasty-silver.cabal
+++ b/tasty-silver.cabal
@@ -1,5 +1,5 @@
 name:                tasty-silver
-version:             3.1.8.1
+version:             3.1.9
 synopsis:            A fancy test runner, including support for golden tests.
 description:
   This package provides a fancy test runner and support for «golden testing».
@@ -17,13 +17,14 @@
 license-file:        LICENSE
 Homepage:            https://github.com/phile314/tasty-silver
 Bug-reports:         https://github.com/phile314/tasty-silver/issues
-author:              Roman Cheplyaka, Philipp Hausmann and others
+author:              Philipp Hausmann, Roman Cheplyaka and others
 maintainer:          Philipp Hausmann
 -- copyright:           
 category:            Testing
 build-type:          Simple
 cabal-version:       >=1.14
 extra-source-files:  CHANGELOG.md
+tested-with:         GHC == 7.4.2, GHC == 7.6.3, GHC == 7.8.4, GHC == 7.10.3, GHC == 8.0.1
 
 Source-repository head
   type:     git