diff --git a/LICENSE b/LICENSE
new file mode 100644
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,30 @@
+Copyright (c) 2016, Kei Hibino
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Kei Hibino nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/Setup.hs b/Setup.hs
new file mode 100644
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/aeson-generic-compat.cabal b/aeson-generic-compat.cabal
new file mode 100644
--- /dev/null
+++ b/aeson-generic-compat.cabal
@@ -0,0 +1,31 @@
+name:                aeson-generic-compat
+version:             0.0.1.0
+synopsis:            Compatible generic class names of Aeson
+description:         This package includes compatible generic class names of Aeson package.
+license:             BSD3
+license-file:        LICENSE
+author:              Kei Hibino
+maintainer:          ex8k.hibino@gmail.com
+-- copyright:
+category:            Text
+build-type:          Simple
+-- extra-source-files:
+cabal-version:       >=1.10
+
+library
+  exposed-modules:
+                     Data.Aeson.Generic.Compat
+  -- other-modules:
+  -- other-extensions:
+  build-depends:         base <5
+                       , aeson >=0.7
+  hs-source-dirs:      src
+  default-language:    Haskell2010
+
+source-repository head
+  type:       git
+  location:   https://github.com/khibino/haskell-aeson-generic-compat
+
+source-repository head
+  type:       mercurial
+  location:   https://bitbucket.org/khibino/haskell-aeson-generic-compat
diff --git a/src/Data/Aeson/Generic/Compat.hs b/src/Data/Aeson/Generic/Compat.hs
new file mode 100644
--- /dev/null
+++ b/src/Data/Aeson/Generic/Compat.hs
@@ -0,0 +1,20 @@
+{-# LANGUAGE CPP #-}
+{-# LANGUAGE ConstraintKinds #-}
+
+module Data.Aeson.Generic.Compat (
+  GFromJSON0, GToJSON0,
+  ) where
+
+import Data.Aeson (GFromJSON, GToJSON)
+#if MIN_VERSION_aeson(1,0,0)
+import Data.Aeson (Zero)
+#endif
+
+
+#if MIN_VERSION_aeson(1,0,0)
+type GFromJSON0  =  GFromJSON Zero
+type GToJSON0    =  GToJSON Zero
+#else
+type GFromJSON0  =  GFromJSON
+type GToJSON0    =  GToJSON
+#endif