diff --git a/blaze-shields.cabal b/blaze-shields.cabal
--- a/blaze-shields.cabal
+++ b/blaze-shields.cabal
@@ -1,5 +1,5 @@
 name: blaze-shields
-version: 0.1.0.0
+version: 0.1.0.1
 synopsis: create svg by Haskell
 description: a Haskell version of shields ,which is on github.
 homepage: http://githubcom/Qinka/blaze-shields
@@ -16,9 +16,10 @@
     exposed-modules:
       Text.Blaze.Svg.Shields
     build-depends:
-      base >= 4.8 && < 5,
+      base >= 4    && < 5,
       blaze-markup >= 0.7 && < 1,
       blaze-html >= 0.8 && <1,
       blaze-svg >=0.3 && < 0.6
     default-language: Haskell2010
     hs-source-dirs:lib
+    ghc-options: -Wall