diff --git a/Text/Appar/Parser.hs b/Text/Appar/Parser.hs
--- a/Text/Appar/Parser.hs
+++ b/Text/Appar/Parser.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE OverloadedStrings #-}
 
 {-|
@@ -85,7 +86,9 @@
         (Nothing, bs') -> (Nothing, bs')
         (Just a,  bs') -> runParser (f a) bs'
     -- fixme: GHC 8.x will remove the fail method
+#if !MIN_VERSION_base(4,13,0)
     fail = Fail.fail
+#endif
 
 instance MonadFail (MkParser inp) where
     fail _   = P $ \bs -> (Nothing, bs)
diff --git a/appar.cabal b/appar.cabal
--- a/appar.cabal
+++ b/appar.cabal
@@ -1,5 +1,5 @@
 Name:                   appar
-Version:                0.1.7
+Version:                0.1.8
 Author:                 Kazu Yamamoto <kazu@iij.ad.jp>
 Maintainer:             Kazu Yamamoto <kazu@iij.ad.jp>
 License:                BSD3