diff --git a/package.json b/package.json
index c73e057be6..f2d89f0f9f 100644
--- a/package.json
+++ b/package.json
@@ -34,9 +34,9 @@
     "@babel/core": "^7.18.2",
     "@babel/register": "^7.17.7",
     "@babel/runtime": "^7.18.3",
-    "@polkadot/dev": "^0.66.34",
+    "@polkadot/dev": "^0.66.35",
     "@polkadot/typegen": "workspace:packages/typegen",
-    "@types/jest": "^28.1.0",
+    "@types/jest": "^28.1.1",
     "copyfiles": "^2.4.1"
   },
   "resolutions": {
diff --git a/packages/types/src/interfaces/contracts/definitions.ts b/packages/types/src/interfaces/contracts/definitions.ts
index af60ca519d..064bf53b2b 100644
--- a/packages/types/src/interfaces/contracts/definitions.ts
+++ b/packages/types/src/interfaces/contracts/definitions.ts
@@ -34,12 +34,7 @@ export default {
       code: 'Bytes',
       storageDepositLimit: 'Option<Balance>'
     },
-    CodeUploadResult: {
-      _enum: {
-        Ok: 'CodeUploadResultValue',
-        Err: 'Null'
-      }
-    },
+    CodeUploadResult: 'Result<CodeUploadResultValue, DispatchError>',
     CodeUploadResultValue: {
       codeHash: 'CodeHash',
       deposit: 'Balance'
@@ -77,12 +72,7 @@ export default {
       flags: 'ContractReturnFlags',
       data: 'Bytes'
     },
-    ContractExecResultResult: {
-      _enum: {
-        Ok: 'ContractExecResultOk',
-        Err: 'DispatchError'
-      }
-    },
+    ContractExecResultResult: 'Result<ContractExecResultOk, DispatchError>',
     ContractExecResultTo267: {
       gasConsumed: 'u64',
       debugMessage: 'Text',
@@ -255,19 +245,8 @@ export default {
       data: 'Bytes',
       salt: 'Bytes'
     },
-    ContractInstantiateResultTo267: {
-      _enum: {
-        Ok: 'InstantiateReturnValueTo267',
-        Err: 'Null'
-      }
-    },
-    ContractInstantiateResultTo299: {
-      _enum: {
-        Ok: 'InstantiateReturnValue',
-        Err: 'Null'
-      },
-      _fallback: 'ContractInstantiateResultTo267'
-    },
+    ContractInstantiateResultTo267: 'Result<InstantiateReturnValueTo267, Null>',
+    ContractInstantiateResultTo299: 'Result<InstantiateReturnValueOk, Null>',
     ContractInstantiateResult: {
       _fallback: 'ContractInstantiateResultTo299',
       gasConsumed: 'u64',
@@ -285,12 +264,7 @@ export default {
       result: 'ExecReturnValue',
       accountId: 'AccountId'
     },
-    InstantiateReturnValue: {
-      _enum: {
-        Ok: 'InstantiateReturnValueOk',
-        Err: 'DispatchError'
-      }
-    },
+    InstantiateReturnValue: 'Result<InstantiateReturnValueOk, DispatchError>',
     InstructionWeights: {
       i64const: 'u32',
       i64load: 'u32',
diff --git a/packages/types/src/interfaces/contracts/types.ts b/packages/types/src/interfaces/contracts/types.ts
index b5fdea3d88..14a5912fea 100644
--- a/packages/types/src/interfaces/contracts/types.ts
+++ b/packages/types/src/interfaces/contracts/types.ts
@@ -1,7 +1,7 @@
 // Auto-generated via `yarn polkadot-types-from-defs`, do not edit
 /* eslint-disable */
 
-import type { Bytes, Compact, Enum, Null, Option, Raw, Set, Struct, Text, U8aFixed, bool, u32, u64, u8 } from '@polkadot/types-codec';
+import type { Bytes, Compact, Enum, Null, Option, Raw, Result, Set, Struct, Text, U8aFixed, bool, u32, u64, u8 } from '@polkadot/types-codec';
 import type { AccountId, Balance, BlockNumber, Hash, Weight } from '@polkadot/types/interfaces/runtime';
 import type { DispatchError } from '@polkadot/types/interfaces/system';
 
@@ -38,11 +38,15 @@ export interface CodeUploadRequest extends Struct {
 }
 
 /** @name CodeUploadResult */
-export interface CodeUploadResult extends Enum {
+export interface CodeUploadResult extends Result<CodeUploadResultValue, DispatchError> {
+  readonly isErr: boolean;
+  readonly asErr: DispatchError;
+  /** @deprecated Use isErr */
+  readonly isError: boolean;
+  /** @deprecated Use asErr */
+  readonly asError: DispatchError;
   readonly isOk: boolean;
   readonly asOk: CodeUploadResultValue;
-  readonly isErr: boolean;
-  readonly type: 'Ok' | 'Err';
 }
 
 /** @name CodeUploadResultValue */
@@ -85,12 +89,15 @@ export interface ContractExecResultOk extends Struct {
 }
 
 /** @name ContractExecResultResult */
-export interface ContractExecResultResult extends Enum {
-  readonly isOk: boolean;
-  readonly asOk: ContractExecResultOk;
+export interface ContractExecResultResult extends Result<ContractExecResultOk, DispatchError> {
   readonly isErr: boolean;
   readonly asErr: DispatchError;
-  readonly type: 'Ok' | 'Err';
+  /** @deprecated Use isErr */
+  readonly isError: boolean;
+  /** @deprecated Use asErr */
+  readonly asError: DispatchError;
+  readonly isOk: boolean;
+  readonly asOk: ContractExecResultOk;
 }
 
 /** @name ContractExecResultSuccessTo255 */
@@ -148,19 +155,21 @@ export interface ContractInstantiateResult extends Struct {
 }
 
 /** @name ContractInstantiateResultTo267 */
-export interface ContractInstantiateResultTo267 extends Enum {
+export interface ContractInstantiateResultTo267 extends Result<InstantiateReturnValueTo267, Null> {
+  readonly isErr: boolean;
+  /** @deprecated Use isErr */
+  readonly isError: boolean;
   readonly isOk: boolean;
   readonly asOk: InstantiateReturnValueTo267;
-  readonly isErr: boolean;
-  readonly type: 'Ok' | 'Err';
 }
 
 /** @name ContractInstantiateResultTo299 */
-export interface ContractInstantiateResultTo299 extends Enum {
-  readonly isOk: boolean;
-  readonly asOk: InstantiateReturnValue;
+export interface ContractInstantiateResultTo299 extends Result<InstantiateReturnValueOk, Null> {
   readonly isErr: boolean;
-  readonly type: 'Ok' | 'Err';
+  /** @deprecated Use isErr */
+  readonly isError: boolean;
+  readonly isOk: boolean;
+  readonly asOk: InstantiateReturnValueOk;
 }
 
 /** @name ContractReturnFlags */
@@ -324,12 +333,15 @@ export interface InstantiateRequestV2 extends Struct {
 }
 
 /** @name InstantiateReturnValue */
-export interface InstantiateReturnValue extends Enum {
-  readonly isOk: boolean;
-  readonly asOk: InstantiateReturnValueOk;
+export interface InstantiateReturnValue extends Result<InstantiateReturnValueOk, DispatchError> {
   readonly isErr: boolean;
   readonly asErr: DispatchError;
-  readonly type: 'Ok' | 'Err';
+  /** @deprecated Use isErr */
+  readonly isError: boolean;
+  /** @deprecated Use asErr */
+  readonly asError: DispatchError;
+  readonly isOk: boolean;
+  readonly asOk: InstantiateReturnValueOk;
 }
 
 /** @name InstantiateReturnValueOk */
diff --git a/yarn.lock b/yarn.lock
index c617c2d1ce..f562d9f42b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2039,9 +2039,9 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@polkadot/dev@npm:^0.66.34":
-  version: 0.66.34
-  resolution: "@polkadot/dev@npm:0.66.34"
+"@polkadot/dev@npm:^0.66.35":
+  version: 0.66.35
+  resolution: "@polkadot/dev@npm:0.66.35"
   dependencies:
     "@babel/cli": ^7.17.10
     "@babel/core": ^7.18.2
@@ -2128,7 +2128,7 @@ __metadata:
     polkadot-exec-rollup: scripts/polkadot-exec-rollup.mjs
     polkadot-exec-tsc: scripts/polkadot-exec-tsc.mjs
     polkadot-exec-webpack: scripts/polkadot-exec-webpack.mjs
-  checksum: 55e37ec25ccdc03d3b7c70474c2bc8f465536a4a1ac3d8b73ce47a62279f561574b44b5e3718be01e1e7c077ee2c44281e62be87b133a6a8c5f2a598fba773bd
+  checksum: 6e6f09d9333dac9ebad7bde7b763dc9857f12a4d53d5e39604d28c62310c8d04f3ae7181455382fc4fcfecd66ffe937e8dce833317bbfb4e84d9008fa44c917e
   languageName: node
   linkType: hard
 
@@ -2771,13 +2771,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/jest@npm:^28.1.0":
-  version: 28.1.0
-  resolution: "@types/jest@npm:28.1.0"
+"@types/jest@npm:^28.1.1":
+  version: 28.1.1
+  resolution: "@types/jest@npm:28.1.1"
   dependencies:
     jest-matcher-utils: ^27.0.0
     pretty-format: ^27.0.0
-  checksum: be4d887b2452e8c1367cd19b23906ba4b64af95e22ca871f81c7af5e945bd39b370e124086356aa9380c4543123b1387448bc2c00a604c6f0a92bc3e4a24e9ce
+  checksum: 0a8b045a7b660372decc807c390d3f99a2b12bb1659a1cd593afe04557f4b7c235b0576a5e35b1577710d20e42759d3d8755eb8bed6edc8733f47007e75a5509
   languageName: node
   linkType: hard
 
@@ -9251,9 +9251,9 @@ resolve@^2.0.0-next.3:
     "@babel/core": ^7.18.2
     "@babel/register": ^7.17.7
     "@babel/runtime": ^7.18.3
-    "@polkadot/dev": ^0.66.34
+    "@polkadot/dev": ^0.66.35
     "@polkadot/typegen": "workspace:packages/typegen"
-    "@types/jest": ^28.1.0
+    "@types/jest": ^28.1.1
     copyfiles: ^2.4.1
   languageName: unknown
   linkType: soft