diff --git a/chart-unit.cabal b/chart-unit.cabal
--- a/chart-unit.cabal
+++ b/chart-unit.cabal
@@ -1,7 +1,7 @@
 name:
   chart-unit
 version:
-  0.3.0
+  0.3.1
 synopsis:
   A set of native haskell charts.
 description: