diff --git a/thumbnail.cabal b/thumbnail.cabal
--- a/thumbnail.cabal
+++ b/thumbnail.cabal
@@ -1,5 +1,5 @@
 Name:                thumbnail
-Version:             0.6
+Version:             0.7
 Synopsis:            generate thumbnail image
 Description:         generate thumbnail image
 Homepage:            https://github.com/cutsea110/thumbnail
@@ -19,4 +19,4 @@
   Exposed-modules:   Graphics.Thumbnail
   Build-depends:     base >= 4.0 && < 5.0
                    , gd >= 3000 && < 4000
-                   , bytestring >= 0.9 && < 0.10
+                   , bytestring >= 0.10 && < 0.11