diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,3 +1,8 @@
+1.7.1.1
+-------
+
+* Support `ansi-wl-pprint-0.6.8`
+
 1.7.1
 -----
 * Support `doctest-0.12`
diff --git a/src/Text/Trifecta/Instances.hs b/src/Text/Trifecta/Instances.hs
--- a/src/Text/Trifecta/Instances.hs
+++ b/src/Text/Trifecta/Instances.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# OPTIONS_GHC -fno-warn-orphans #-}
 -----------------------------------------------------------------------------
 -- |
@@ -12,8 +13,10 @@
 -----------------------------------------------------------------------------
 module Text.Trifecta.Instances () where
 
+#if !MIN_VERSION_ansi_wl_pprint(0,6,8)
 import Text.PrettyPrint.ANSI.Leijen
 import qualified Data.Semigroup as Data
 
 instance Data.Semigroup Doc where
   (<>) = (<>)
+#endif
diff --git a/trifecta.cabal b/trifecta.cabal
--- a/trifecta.cabal
+++ b/trifecta.cabal
@@ -1,6 +1,6 @@
 name:          trifecta
 category:      Text, Parsing, Diagnostics, Pretty Printer, Logging
-version:       1.7.1
+version:       1.7.1.1
 license:       BSD3
 cabal-version: >= 1.10
 license-file:  LICENSE
@@ -96,7 +96,7 @@
   default-language: Haskell2010
   build-depends:
     base,
-    doctest >= 0.11.1 && < 0.13,
+    doctest >= 0.11.1 && < 0.14,
     trifecta
 
 test-suite quickcheck