diff --git a/logict.cabal b/logict.cabal
--- a/logict.cabal
+++ b/logict.cabal
@@ -1,5 +1,5 @@
 Name:                   logict
-Version:                0.2.1
+Version:                0.2.2
 Description:            A continuation-based, backtracking, logic programming monad.
                         An adaptation of the two-continuation implementation found
                         in the paper "Backtracking, Interleaving, and Terminating
@@ -15,7 +15,7 @@
 Homepage:               http://code.haskell.org/~dolio/logict
 Stability:              Experimental, based on paper
 Tested-With:            GHC
-Build-Depends:          base, mtl
+Build-Depends:          base, mtl>=1.0.1
 Exposed-Modules:        Control.Monad.Logic,
                         Control.Monad.Logic.Class
 Extensions:             MultiParamTypeClasses,