diff --git a/hyphenation.cabal b/hyphenation.cabal
--- a/hyphenation.cabal
+++ b/hyphenation.cabal
@@ -1,6 +1,6 @@
 name:          hyphenation
 category:      Text
-version:       0.2.0.1
+version:       0.2.1
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -40,7 +40,7 @@
   build-depends:
     base                 >= 4 && < 5,
     containers           >= 0.3.0.0 && < 0.5,
-    unordered-containers >= 0.1.4.6 && < 0.2
+    unordered-containers >= 0.2.1   && < 0.3
 
   exposed-modules:
    Text.Hyphenation