diff --git a/quickcheck-io.cabal b/quickcheck-io.cabal
--- a/quickcheck-io.cabal
+++ b/quickcheck-io.cabal
@@ -1,9 +1,9 @@
--- This file has been generated from package.yaml by hpack version 0.5.4.
+-- This file has been generated from package.yaml by hpack version 0.14.1.
 --
 -- see: https://github.com/sol/hpack
 
 name:             quickcheck-io
-version:          0.1.2
+version:          0.1.3
 synopsis:         Use HUnit assertions as QuickCheck properties
 description:      This package provides an orphan instance that allows you to
                   use HUnit assertions as QuickCheck properties.
diff --git a/src/Test/QuickCheck/IO.hs b/src/Test/QuickCheck/IO.hs
--- a/src/Test/QuickCheck/IO.hs
+++ b/src/Test/QuickCheck/IO.hs
@@ -8,7 +8,9 @@
 
 instance Testable Assertion where
   property = propertyIO
+#if !MIN_VERSION_QuickCheck(2,9,0)
   exhaustive _ = True
+#endif
 
 propertyIO :: Assertion -> Property
 #if MIN_VERSION_QuickCheck(2,7,0)