diff --git a/Options/Applicative/Builder.hs b/Options/Applicative/Builder.hs
--- a/Options/Applicative/Builder.hs
+++ b/Options/Applicative/Builder.hs
@@ -267,7 +267,7 @@
 -- the given parse error.  If you simply want to output a message, use
 -- 'infoOption' instead.
 abortOption :: ParseError -> Mod OptionFields (a -> a) -> Parser (a -> a)
-abortOption err m = nullOption . (<> m) $ mconcat
+abortOption err m = nullOption . (`mappend` m) $ mconcat
   [ reader (const (ReadM (Left err)))
   , noArgError err
   , value id
diff --git a/optparse-applicative.cabal b/optparse-applicative.cabal
--- a/optparse-applicative.cabal
+++ b/optparse-applicative.cabal
@@ -1,5 +1,5 @@
 name:                optparse-applicative
-version:             0.7.0.1
+version:             0.7.0.2
 synopsis:            Utilities and combinators for parsing command line options
 description:
     Here is a simple example of an applicative option parser: