diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## 1.0.1 - 2019-01-01
+### Fixed
+- Correct JSON-RPC 2.0 methods returning null result.
+
 ## 1.0.0 - 2018-08-12
 ### Added
 - Complete JSON-RPC 1.0 and 2.0 support.
diff --git a/json-rpc.cabal b/json-rpc.cabal
--- a/json-rpc.cabal
+++ b/json-rpc.cabal
@@ -1,11 +1,13 @@
--- This file has been generated from package.yaml by hpack version 0.20.0.
+cabal-version: 1.12
+
+-- This file has been generated from package.yaml by hpack version 0.31.2.
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 17ad40ec32205d9c35293e1ce27724ff52b373645c39da1d0d09976874e4d5e1
+-- hash: fd7f8d00f885bb74d1bb71f5b7182a578700dffb6cbceec348421e027cb54c13
 
 name:           json-rpc
-version:        1.0.0
+version:        1.0.1
 synopsis:       Fully-featured JSON-RPC 2.0 library
 description:    Library compatible with JSON-RPC 2.0 and 1.0
 category:       Network
@@ -16,17 +18,22 @@
 license:        PublicDomain
 license-file:   UNLICENSE
 build-type:     Simple
-cabal-version:  >= 1.10
-
 extra-source-files:
-    CHANGELOG.md
     README.md
+    CHANGELOG.md
 
 source-repository head
   type: git
   location: https://github.com/xenog/json-rpc.git
 
 library
+  exposed-modules:
+      Network.JSONRPC
+  other-modules:
+      Network.JSONRPC.Arbitrary
+      Network.JSONRPC.Data
+      Network.JSONRPC.Interface
+      Paths_json_rpc
   hs-source-dirs:
       src
   ghc-options: -Wall
@@ -48,17 +55,12 @@
     , unliftio
     , unordered-containers
     , vector
-  exposed-modules:
-      Network.JSONRPC
-  other-modules:
-      Network.JSONRPC.Arbitrary
-      Network.JSONRPC.Data
-      Network.JSONRPC.Interface
-      Paths_json_rpc
   default-language: Haskell2010
 
 executable concurrent-client
   main-is: examples/concurrent-client.hs
+  other-modules:
+      Paths_json_rpc
   build-depends:
       QuickCheck
     , aeson
@@ -75,12 +77,12 @@
     , unliftio
     , unordered-containers
     , vector
-  other-modules:
-      Paths_json_rpc
   default-language: Haskell2010
 
 executable concurrent-server
   main-is: examples/concurrent-server.hs
+  other-modules:
+      Paths_json_rpc
   build-depends:
       QuickCheck
     , aeson
@@ -97,12 +99,12 @@
     , unliftio
     , unordered-containers
     , vector
-  other-modules:
-      Paths_json_rpc
   default-language: Haskell2010
 
 executable time-client
   main-is: examples/time-client.hs
+  other-modules:
+      Paths_json_rpc
   build-depends:
       QuickCheck
     , aeson
@@ -119,12 +121,12 @@
     , unliftio
     , unordered-containers
     , vector
-  other-modules:
-      Paths_json_rpc
   default-language: Haskell2010
 
 executable time-server
   main-is: examples/time-server.hs
+  other-modules:
+      Paths_json_rpc
   build-depends:
       QuickCheck
     , aeson
@@ -141,13 +143,13 @@
     , unliftio
     , unordered-containers
     , vector
-  other-modules:
-      Paths_json_rpc
   default-language: Haskell2010
 
 test-suite test-json-rpc
   type: exitcode-stdio-1.0
   main-is: Spec.hs
+  other-modules:
+      Paths_json_rpc
   hs-source-dirs:
       test
   ghc-options: -threaded -rtsopts -with-rtsopts=-N
@@ -168,6 +170,4 @@
     , unliftio
     , unordered-containers
     , vector
-  other-modules:
-      Paths_json_rpc
   default-language: Haskell2010
diff --git a/src/Network/JSONRPC/Data.hs b/src/Network/JSONRPC/Data.hs
--- a/src/Network/JSONRPC/Data.hs
+++ b/src/Network/JSONRPC/Data.hs
@@ -220,7 +220,9 @@
     v <- parseVer o
     i <- o .:? "id"
     r <- o .:? "result" .!= Null
-    p <- if r == Null then Left <$> o .: "error" else return $ Right r
+    p <- case v of
+          V1 -> if r == Null then Left <$> o .: "error" else return $ Right r
+          V2 -> maybe (Right r) Left <$> o .:? "error"
     return (v, i, p)
 
 -- | Create a response from a request. Use in servers.