diff --git a/purescript-iso.cabal b/purescript-iso.cabal
--- a/purescript-iso.cabal
+++ b/purescript-iso.cabal
@@ -2,10 +2,10 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 4320476adf4bd761d45ce24ff0390b54cfabe9cf0b900952d6383f0acb87baff
+-- hash: 5a8f0bf52c2d05c29489bec4ce87c26941be52640d60ae91078e9fe8470a6fdf
 
 name:           purescript-iso
-version:        0.0.2
+version:        0.0.2.1
 synopsis:       Isomorphic trivial data type definitions over JSON
 description:    Please see the README on GitHub at <https://github.com/githubuser/purescript-iso#readme>
 category:       Web
@@ -36,6 +36,7 @@
       Data.Aeson.JSONString
       Data.Aeson.JSONTuple
       Data.Aeson.JSONUnit
+      Data.Aeson.JSONVoid
       Test.Serialization
       Test.Serialization.Types
   other-modules:
diff --git a/src/Data/Aeson/JSONVoid.hs b/src/Data/Aeson/JSONVoid.hs
new file mode 100644
--- /dev/null
+++ b/src/Data/Aeson/JSONVoid.hs
@@ -0,0 +1,20 @@
+{-# LANGUAGE
+    OverloadedStrings
+  , DeriveGeneric
+  #-}
+
+module Data.Aeson.JSONVoid where
+
+import Data.Aeson (ToJSON (..), FromJSON (..), Value (String))
+import Data.Aeson.Types (typeMismatch)
+import GHC.Generics (Generic)
+
+
+data JSONVoid
+  deriving (Generic)
+
+instance ToJSON JSONVoid where
+  toJSON _ = String ""
+
+instance FromJSON JSONVoid where
+  parseJSON = typeMismatch "JSONVoid"