diff --git a/Bindings/Groonga/Raw/Plugin.hsc b/Bindings/Groonga/Raw/Plugin.hsc
--- a/Bindings/Groonga/Raw/Plugin.hsc
+++ b/Bindings/Groonga/Raw/Plugin.hsc
@@ -30,3 +30,5 @@
 #ccall grn_plugin_win32_base_dir , IO CString
 #ccall grn_plugin_charlen , Ptr <struct _grn_ctx> -> CString -> CUInt -> <grn_encoding> -> IO CInt
 #ccall grn_plugin_isspace , Ptr <struct _grn_ctx> -> CString -> CUInt -> <grn_encoding> -> IO CInt
+#ccall grn_plugin_expr_var_init , Ptr <struct _grn_ctx> -> Ptr <grn_expr_var> -> CString -> CInt -> IO <grn_rc>
+#ccall grn_plugin_command_create , Ptr <struct _grn_ctx> -> CString -> CInt -> <grn_proc_func> -> CUInt -> Ptr <grn_expr_var> -> IO (Ptr <struct _grn_obj>)
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -7,9 +7,9 @@
 
 ## dependencies
 
-* groonga 4.0.2+
+* groonga 4.0.3+
 * hsc2hs
-* and some cabal packages
+* and some cabal packages (see: haroonga.cabal)
 
 ## export module(s)
 
@@ -35,3 +35,8 @@
 * Currently, Haroonga supports __platform which has pkg-config command only__.
     - Linux
     - Mac OSX
+
+## Haddock
+
+* [Hackage](http://hackage.haskell.org/package/haroonga-0.1.2.0/docs/)
+* [Github Pages ](http://cosmo0920.github.io/haroonga/)
diff --git a/haroonga.cabal b/haroonga.cabal
--- a/haroonga.cabal
+++ b/haroonga.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                  haroonga
-version:               0.1.2.0
+version:               0.1.3.0
 synopsis:              Low level bindings for Groonga.
 description:           Bindings to Groonga  <http://groonga.org/>.
 license:               LGPL-2.1
@@ -29,7 +29,7 @@
   hs-source-dirs:      .
   build-tools:         hsc2hs
   default-language:    Haskell2010
-  pkgconfig-depends:   groonga >= 4.0.2
+  pkgconfig-depends:   groonga >= 4.0.3
 
 source-repository head
   type: git