diff --git a/hat.cabal b/hat.cabal
--- a/hat.cabal
+++ b/hat.cabal
@@ -1,6 +1,6 @@
 
 name:                hat
-version:             2.7.0.5
+version:             2.7.0.6
 synopsis:            The Haskell tracer, generating and viewing Haskell execution traces
 description:
   hat-trans transforms Module.hs into Hat/Module.hs such that when the program is
@@ -64,7 +64,7 @@
 
 library
   exposed-modules:     Hat.Array, Hat.Char, Hat.Complex, Hat.CPUTime, Hat.Directory, Hat.Hack, Hat.Hat, Hat.IO, Hat.Ix, Hat.List, Hat.Locale, Hat.Maybe, Hat.Monad, Hat.Numeric, Hat.Prelude, Hat.PreludeBasic, Hat.Random, Hat.Ratio, Hat.System, Hat.Time, Hat.Control.Monad, Hat.Data.Char, Hat.Data.Maybe, Hat.Data.List, Hat.System.Environment, Hat.System.Exit, Hat.System.IO
-  build-depends:       base ==4.*, directory ==1.1.*, random ==1.0.*, process ==1.1.*, old-time ==1.1.*, old-locale ==1.0.*
+  build-depends:       base >=4.5 && < 5, directory >=1.1, random >=1.0, process >=1.1, old-time >=1.1, old-locale >=1.0
   other-modules:       Hat.DirectoryBuiltin, Hat.DirectoryBuiltinTypes, Hat.IOBuiltin, Hat.IOBuiltinTypes, Hat.PreludeBuiltin, Hat.PreludeBuiltinTypes, Hat.RandomBuiltin, Hat.SystemBuiltin, Hat.SystemBuiltinTypes, Hat.TimeBuiltin, Hat.TimeBuiltinTypes
   extensions:	       ForeignFunctionInterface
   includes:	       hat-c.h, art.h, ntohl.h