diff --git a/testpack.cabal b/testpack.cabal
--- a/testpack.cabal
+++ b/testpack.cabal
@@ -1,5 +1,5 @@
 Name: testpack
-Version: 1.0.0
+Version: 1.0.1
 License: LGPL
 Maintainer: John Goerzen <jgoerzen@complete.org>
 Author: John Goerzen
@@ -31,6 +31,11 @@
   Test.QuickCheck.Instances
 
  Extensions: ExistentialQuantification
+
+ -- Hack for cabal-install weirdness.  cabal-install forces base 3,
+ -- though it works fine for Setup.lhs manually.  Fix.
+ if impl(ghc >= 6.9)
+    build-depends: base >= 4
 
  Build-Depends: base,
                haskell98, mtl, HUnit,