diff --git a/.changeset/wicked-socks-breathe.md b/.changeset/wicked-socks-breathe.md
new file mode 100644
index 00000000000..c142bd311f0
--- /dev/null
+++ b/.changeset/wicked-socks-breathe.md
@@ -0,0 +1,6 @@
+---
+"@fuel-ts/abi-coder": patch
+"@fuel-ts/abi-typegen": patch
+---
+
+chore: added `messagesTypes` to `JsonAbi`
diff --git a/packages/abi-coder/src/types/JsonAbi.ts b/packages/abi-coder/src/types/JsonAbi.ts
index 6df0b2d9d6e..2e481d27aaf 100644
--- a/packages/abi-coder/src/types/JsonAbi.ts
+++ b/packages/abi-coder/src/types/JsonAbi.ts
@@ -6,6 +6,7 @@ export interface JsonAbi {
   readonly types: readonly JsonAbiType[];
   readonly loggedTypes: readonly JsonAbiLoggedType[];
   readonly functions: readonly JsonAbiFunction[];
+  readonly messagesTypes: readonly JsonAbiMessagesType[];
   readonly configurables: readonly JsonAbiConfigurable[];
   readonly encoding?: string;
 }
@@ -16,17 +17,27 @@ export interface JsonAbiType {
   readonly components: readonly JsonAbiArgument[] | null;
   readonly typeParameters: readonly number[] | null;
 }
+
 export interface JsonAbiArgument {
   readonly type: number;
   readonly name: string;
   readonly typeArguments: readonly JsonAbiArgument[] | null;
 }
 
+export interface JsonAbiArgumentWithoutName {
+  readonly type: number;
+  readonly typeArguments: readonly JsonAbiArgumentWithoutName[] | null;
+}
+
 export interface JsonAbiLoggedType {
   readonly logId: string;
   readonly loggedType: JsonAbiArgument;
 }
 
+export interface JsonAbiMessagesType {
+  readonly messageDataType: JsonAbiArgumentWithoutName;
+}
+
 export interface JsonAbiFunction {
   readonly name: string;
   readonly inputs: readonly JsonAbiArgument[];
diff --git a/packages/abi-typegen/src/types/interfaces/IRawAbi.ts b/packages/abi-typegen/src/types/interfaces/IRawAbi.ts
index a0c46accbde..ee8753614f6 100644
--- a/packages/abi-typegen/src/types/interfaces/IRawAbi.ts
+++ b/packages/abi-typegen/src/types/interfaces/IRawAbi.ts
@@ -1,6 +1,7 @@
 import type { IRawAbiConfigurable } from './IRawAbiConfigurable';
 import type { IRawAbiFunction } from './IRawAbiFunction';
 import type { IRawAbiLoggedTypes } from './IRawAbiLoggedTypes';
+import type { IRawAbiMessagesType } from './IRawAbiMessagesType';
 import type { IRawAbiTypeRoot } from './IRawAbiType';
 
 export interface IRawAbi {
@@ -8,4 +9,5 @@ export interface IRawAbi {
   functions: IRawAbiFunction[];
   loggedTypes: IRawAbiLoggedTypes[];
   configurables: IRawAbiConfigurable[];
+  messagesTypes: IRawAbiMessagesType[];
 }
diff --git a/packages/abi-typegen/src/types/interfaces/IRawAbiMessagesType.ts b/packages/abi-typegen/src/types/interfaces/IRawAbiMessagesType.ts
new file mode 100644
index 00000000000..4d6993cb35f
--- /dev/null
+++ b/packages/abi-typegen/src/types/interfaces/IRawAbiMessagesType.ts
@@ -0,0 +1,8 @@
+export interface IRawAbiMessagesType {
+  messageDataType: IRawAbiMessageDataType;
+}
+
+export interface IRawAbiMessageDataType {
+  type: number;
+  typeArguments: null | IRawAbiMessageDataType[];
+}
diff --git a/packages/account/test/fixtures/predicate-abi.ts b/packages/account/test/fixtures/predicate-abi.ts
index df0ab35435b..c1f6d092238 100644
--- a/packages/account/test/fixtures/predicate-abi.ts
+++ b/packages/account/test/fixtures/predicate-abi.ts
@@ -34,5 +34,6 @@ export const predicateAbi: JsonAbi = {
     },
   ],
   loggedTypes: [],
+  messagesTypes: [],
   configurables: [],
 };
diff --git a/packages/account/test/fixtures/transaction-summary.ts b/packages/account/test/fixtures/transaction-summary.ts
index 1410ae72831..1b0b3e8c2a1 100644
--- a/packages/account/test/fixtures/transaction-summary.ts
+++ b/packages/account/test/fixtures/transaction-summary.ts
@@ -256,6 +256,7 @@ export const MOCK_ABI_MAP: AbiMap = {
       },
     ],
     loggedTypes: [],
+    messagesTypes: [],
     configurables: [],
   },
 };
diff --git a/packages/account/test/fuel-wallet-connector.test.ts b/packages/account/test/fuel-wallet-connector.test.ts
index 4653a92a21d..5ac5b2af478 100644
--- a/packages/account/test/fuel-wallet-connector.test.ts
+++ b/packages/account/test/fuel-wallet-connector.test.ts
@@ -286,6 +286,7 @@ describe('Fuel Connector', () => {
       types: [],
       loggedTypes: [],
       functions: [],
+      messagesTypes: [],
       configurables: [],
     });
     expect(isAdded).toEqual(true);
diff --git a/packages/program/src/contract.test.ts b/packages/program/src/contract.test.ts
index 78e3aa3123c..d861b27d4d0 100644
--- a/packages/program/src/contract.test.ts
+++ b/packages/program/src/contract.test.ts
@@ -33,6 +33,7 @@ const ABI: JsonAbi = {
     },
   ],
   loggedTypes: [],
+  messagesTypes: [],
   configurables: [],
 };
 
diff --git a/packages/script/test/mocks.ts b/packages/script/test/mocks.ts
index dbb32496a4b..6c7b8a9516f 100644
--- a/packages/script/test/mocks.ts
+++ b/packages/script/test/mocks.ts
@@ -3,6 +3,7 @@ import type { JsonAbi } from '@fuel-ts/abi-coder';
 export const jsonAbiFragmentMock: JsonAbi = {
   configurables: [],
   loggedTypes: [],
+  messagesTypes: [],
   types: [
     {
       typeId: 0,
@@ -88,5 +89,6 @@ export const jsonAbiMock: JsonAbi = {
     },
   ],
   loggedTypes: [],
+  messagesTypes: [],
   configurables: [],
 };