diff --git a/sifflet.cabal b/sifflet.cabal
--- a/sifflet.cabal
+++ b/sifflet.cabal
@@ -1,10 +1,10 @@
 name: sifflet
-version: 1.2.5
+version: 1.2.5.1
 cabal-version: >= 1.8
 build-type: Simple
 license: BSD3
 license-file: LICENSE
-copyright: (C) 2009-2011 Gregory D. Weber
+copyright: (C) 2009-2012 Gregory D. Weber
 author: Gregory D. Weber
 maintainer: "gdweber" ++ drop 3 "abc@" ++ "iue.edu"
 bug-reports: mailto:"gdweber" ++ drop 3 "abc@" ++ "iue.edu"
@@ -48,7 +48,7 @@
     containers >= 0.2 && < 0.5,
     fgl >= 5.4 && < 5.5,
     hxt >= 9 && < 10.0,
-    mtl >= 1.1 && < 2.1,
+    mtl >= 1.1 && < 2.2,
     process >= 1.0 && < 1.2,
     sifflet-lib >= 1.2.3