diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@
 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).
 
+## 1.1.0 - 2023-12-29
+
+### Changed
+- Update dependency to Aeson 2.2.
+
 ## 1.0.4 - 2022-05-15
 
 ### Fixed
diff --git a/json-rpc.cabal b/json-rpc.cabal
--- a/json-rpc.cabal
+++ b/json-rpc.cabal
@@ -1,13 +1,13 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.34.4.
+-- This file has been generated from package.yaml by hpack version 0.36.0.
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 4e2a99d4fdf85a19844c7bf16c14016bfd147baa005a628bebb4ea97823c379c
+-- hash: e0d0e4a6940f7d7d8752f6f8bc7749d96342dbc95525d41d2e9d23fddfa5bcf7
 
 name:           json-rpc
-version:        1.0.4
+version:        1.1.0
 synopsis:       Fully-featured JSON-RPC 2.0 library
 description:    Please see the README on GitHub at <https://github.com/jprupp/json-rpc#readme>
 category:       Network
@@ -39,8 +39,9 @@
   ghc-options: -Wall
   build-depends:
       QuickCheck
-    , aeson >=2.0.3.0
+    , aeson >=2.2
     , attoparsec
+    , attoparsec-aeson
     , base >=4.6 && <5
     , bytestring
     , conduit
@@ -63,7 +64,8 @@
       Paths_json_rpc
   build-depends:
       QuickCheck
-    , aeson >=2.0.3.0
+    , aeson >=2.2
+    , attoparsec-aeson
     , base >=4.6 && <5
     , bytestring
     , conduit
@@ -85,7 +87,8 @@
       Paths_json_rpc
   build-depends:
       QuickCheck
-    , aeson >=2.0.3.0
+    , aeson >=2.2
+    , attoparsec-aeson
     , base >=4.6 && <5
     , bytestring
     , conduit
@@ -107,7 +110,8 @@
       Paths_json_rpc
   build-depends:
       QuickCheck
-    , aeson >=2.0.3.0
+    , aeson >=2.2
+    , attoparsec-aeson
     , base >=4.6 && <5
     , bytestring
     , conduit
@@ -129,7 +133,8 @@
       Paths_json_rpc
   build-depends:
       QuickCheck
-    , aeson >=2.0.3.0
+    , aeson >=2.2
+    , attoparsec-aeson
     , base >=4.6 && <5
     , bytestring
     , conduit
@@ -155,7 +160,8 @@
   ghc-options: -threaded -rtsopts -with-rtsopts=-N
   build-depends:
       QuickCheck
-    , aeson >=2.0.3.0
+    , aeson >=2.2
+    , attoparsec-aeson
     , base >=4.6 && <5
     , bytestring
     , conduit
diff --git a/src/Network/JSONRPC/Arbitrary.hs b/src/Network/JSONRPC/Arbitrary.hs
--- a/src/Network/JSONRPC/Arbitrary.hs
+++ b/src/Network/JSONRPC/Arbitrary.hs
@@ -2,6 +2,7 @@
 {-# OPTIONS_GHC -fno-warn-orphans #-}
 module Network.JSONRPC.Arbitrary where
 
+import           Data.Aeson
 import           Data.Text                 (Text)
 import qualified Data.Text                 as T
 import           Network.JSONRPC.Data
@@ -22,10 +23,12 @@
 
 instance Arbitrary Response where
     arbitrary = oneof
-        [ Response <$> arbitrary <*> arbitrary <*> arbitrary
+        [ Response <$> arbitrary <*> res <*> arbitrary
         , ResponseError <$> arbitrary <*> arbitrary <*> arbitrary
         , OrphanError <$> arbitrary <*> arbitrary
         ]
+      where
+        res = arbitrary `suchThat` (/= Null)
 
 
 instance Arbitrary ErrorObj where
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
@@ -95,9 +95,9 @@
     case parserM of
         Nothing -> Left $ errorMethod m
         Just parser ->
-            case parseMaybe parser p of
-                Nothing -> Left $ errorParams p
-                Just  q -> Right q
+            case parseEither parser p of
+                Left e  -> Left $ errorParams p e
+                Right q -> Right q
   where
     m = getReqMethod req
     p = getReqParams req
@@ -288,8 +288,8 @@
 errorInvalid = ErrorObj "Invalid request" (-32600)
 
 -- | Invalid params.
-errorParams :: Value -> ErrorObj
-errorParams = ErrorObj "Invalid params" (-32602)
+errorParams :: Value -> String -> ErrorObj
+errorParams v e = ErrorObj ("Invalid params: " ++ e) (-32602) v
 
 -- | Method not found.
 errorMethod :: Method -> ErrorObj
diff --git a/src/Network/JSONRPC/Interface.hs b/src/Network/JSONRPC/Interface.hs
--- a/src/Network/JSONRPC/Interface.hs
+++ b/src/Network/JSONRPC/Interface.hs
@@ -40,6 +40,7 @@
 import           Control.Monad.Reader
 import           Control.Monad.State
 import           Data.Aeson
+import           Data.Aeson.Parser
 import           Data.Aeson.Types           (parseMaybe)
 import           Data.Attoparsec.ByteString
 import           Data.ByteString            (ByteString)