diff --git a/LICENSE b/LICENSE
new file mode 100644
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2017 Yuji Yamamoto
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
diff --git a/README.md b/README.md
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--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+# th-strict-compat
+
+Compatibility shim for Bang and Strict in Template Haskell.
diff --git a/Setup.hs b/Setup.hs
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--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/src/Language/Haskell/TH/Compat/Strict.hs b/src/Language/Haskell/TH/Compat/Strict.hs
new file mode 100644
--- /dev/null
+++ b/src/Language/Haskell/TH/Compat/Strict.hs
@@ -0,0 +1,20 @@
+module Language.Haskell.TH.Compat.Strict
+  ( isStrict
+  , notStrict
+  , unpacked
+  ) where
+
+
+import           Language.Haskell.TH.Syntax
+
+
+isStrict, notStrict, unpacked :: Strict
+#if MIN_VERSION_template_haskell(2,11,0)
+isStrict = Bang NoSourceUnpackedness SourceStrict
+notStrict = Bang NoSourceUnpackedness NoSourceStrictness
+unpacked = Bang SourceUnpack NoSourceStrictness
+#else
+isStrict = IsStrict
+notStrict = NotStrict
+unpacked = Unpacked
+#endif
diff --git a/th-strict-compat.cabal b/th-strict-compat.cabal
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--- /dev/null
+++ b/th-strict-compat.cabal
@@ -0,0 +1,27 @@
+name:                th-strict-compat
+version:             0.1.0.0
+synopsis:            Compatibility shim for Bang and Strict in Template Haskell.
+-- description:
+homepage:            https://gitlab.com/igrep/th-strict-compat
+license:             Apache-2.0
+license-file:        LICENSE
+author:              Yuji Yamamoto
+maintainer:          whosekiteneverfly@gmail.com
+copyright:           2017 Yuji Yamamoto
+category:            Language
+build-type:          Simple
+extra-source-files:  README.md
+cabal-version:       >=1.10
+
+library
+  hs-source-dirs:      src
+  exposed-modules:     Language.Haskell.TH.Compat.Strict
+  build-depends:       base >= 4.7 && < 5
+                     , template-haskell >= 2.10
+  default-language:    Haskell2010
+  default-extensions:  CPP
+
+
+source-repository head
+  type:     git
+  location: https://gitlab.com/igrep/th-strict-compat