diff --git a/family-tree.cabal b/family-tree.cabal
--- a/family-tree.cabal
+++ b/family-tree.cabal
@@ -10,7 +10,7 @@
 -- PVP summary:      +-+------- breaking API changes
 --                   | | +----- non-breaking API additions
 --                   | | | +--- code changes with no API change
-version:             0.3.0.0
+version:             0.3.0.1
 
 package-url:         https://github.com/Taneb/family-tree
 
@@ -58,7 +58,14 @@
   -- other-modules:       
   
   -- Other library packages from which modules are imported.
-  build-depends:       base >= 4.3 && < 5, lens >= 3.7 && < 3.9, binary < 0.7, unordered-containers ==0.2.*, containers >=0.42 && < 0.6, text ==0.11.*, time < 1.5, intervals < 0.3
+  build-depends:       base >= 4.3 && < 5,
+                       lens >= 3.7 && < 3.9,
+                       binary < 0.7,
+                       unordered-containers ==0.2.*,
+                       containers >=0.4.2 && < 0.6,
+                       text ==0.11.*,
+                       time < 1.5,
+                       intervals < 0.3
   
   -- Directories containing source files.
   hs-source-dirs:      src