diff --git a/ChangeLog.md b/ChangeLog.md
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--- /dev/null
+++ b/ChangeLog.md
@@ -0,0 +1,3 @@
+# Changelog for hs-swisstable-hashtables-class
+
+## Unreleased changes
diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,30 @@
+Copyright Author name here (c) 2021
+
+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 Author name here 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/README.md b/README.md
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--- /dev/null
+++ b/README.md
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+# hs-swisstable-hashtables-class
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/hs-swisstable-hashtables-class.cabal b/hs-swisstable-hashtables-class.cabal
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--- /dev/null
+++ b/hs-swisstable-hashtables-class.cabal
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+cabal-version: 1.12
+
+-- This file has been generated from package.yaml by hpack version 0.33.0.
+--
+-- see: https://github.com/sol/hpack
+--
+-- hash: 27df84dbb7a81c50344e04aba85e60642caf53894d7b902b54455d3d6cff566e
+
+name:           hs-swisstable-hashtables-class
+version:        0.1.0.0
+synopsis:       Data.HashTable.Class instance definition for Data.HashTable.ST.Swiss
+description:    Please see the README on GitHub at <https://github.com/nakaji-dayo/hs-swisstable-hashtables-class#readme>
+category:       Data
+homepage:       https://github.com/nakaji-dayo/hs-swisstable-hashtables-class#readme
+bug-reports:    https://github.com/nakaji-dayo/hs-swisstable-hashtables-class/issues
+author:         Daishi Nakajima
+maintainer:     nakaji.dayo@gmail.com
+copyright:      2021 Daishi Nakajima
+license:        BSD3
+license-file:   LICENSE
+build-type:     Simple
+extra-source-files:
+    README.md
+    ChangeLog.md
+
+source-repository head
+  type: git
+  location: https://github.com/nakaji-dayo/hs-swisstable-hashtables-class
+
+library
+  exposed-modules:
+      Data.HashTable.ST.Swiss.Instance
+  other-modules:
+      Paths_hs_swisstable_hashtables_class
+  hs-source-dirs:
+      src
+  build-depends:
+      base >=4.7 && <5
+    , hashtables
+    , swisstable
+  default-language: Haskell2010
+
+test-suite hs-swisstable-hashtables-class-test
+  type: exitcode-stdio-1.0
+  main-is: Spec.hs
+  other-modules:
+      Paths_hs_swisstable_hashtables_class
+  hs-source-dirs:
+      test
+  ghc-options: -threaded -rtsopts -with-rtsopts=-N
+  build-depends:
+      base >=4.7 && <5
+    , hashtables
+    , hs-swisstable-hashtables-class
+    , swisstable
+  default-language: Haskell2010
diff --git a/src/Data/HashTable/ST/Swiss/Instance.hs b/src/Data/HashTable/ST/Swiss/Instance.hs
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--- /dev/null
+++ b/src/Data/HashTable/ST/Swiss/Instance.hs
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+module Data.HashTable.ST.Swiss.Instance where
+
+
+import           Data.HashTable.Class
+import           Data.HashTable.IO       (IOHashTable)
+import qualified Data.HashTable.ST.Swiss as S
+
+instance HashTable S.Table where
+    new             = S.new
+    newSized        = S.newSized
+    insert          = S.insert
+    delete          = S.delete
+    lookup          = S.lookup
+    foldM           = S.foldM
+    mapM_           = S.mapM_
+    lookupIndex     = error "not implemented"
+    nextByIndex     = error "not implemented"
+    computeOverhead = error "not implemented"
+    mutate          = S.mutate
+    mutateST        = S.mutateST
+
+type SwissHashTable k v = IOHashTable S.Table k v
diff --git a/test/Spec.hs b/test/Spec.hs
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--- /dev/null
+++ b/test/Spec.hs
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+main :: IO ()
+main = putStrLn "Test suite not yet implemented"