diff --git a/multiset-comb.cabal b/multiset-comb.cabal
--- a/multiset-comb.cabal
+++ b/multiset-comb.cabal
@@ -1,5 +1,5 @@
 Name:                multiset-comb
-Version:             0.2.4
+Version:             0.2.4.1
 Synopsis:            Combinatorial algorithms over multisets
 Description:         Various combinatorial algorithms over multisets,
                      including generating all permutations,
@@ -23,6 +23,6 @@
 Library
   Exposed-modules:     Math.Combinatorics.Multiset
   Build-depends:       base >= 3 && < 5,
-                       containers >= 0.4 && < 0.6,
-                       transformers >= 0.3 && < 0.5
+                       containers >= 0.5 && < 0.6,
+                       transformers >= 0.3 && < 0.6
   Default-language:    Haskell2010