diff --git a/.talismanrc b/.talismanrc
index 3762020..58042d7 100644
--- a/.talismanrc
+++ b/.talismanrc
@@ -5,5 +5,5 @@ fileignoreconfig:
   - filename: lib/commands/tsgen.js
     checksum: 02bab20fef5508565dbf38b5c12192c48ec27249b89d48c70303abaae17984ce
   - filename: package-lock.json
-    checksum: 44c6d643ffd404bad85ab55aedd739f1c9a09fa015745882968b572617637de4
+    checksum: e7ea94799c4afab6e55935c79ac40d3cac38e2ce6e9882dbd4c2e5a3c551e087
 version: "1.0"
diff --git a/MIGRATION.md b/MIGRATION.md
index da8f57f..aabc07e 100644
--- a/MIGRATION.md
+++ b/MIGRATION.md
@@ -1,7 +1,61 @@
+## Migrating from v3 to v4
+
+This changelog documents a breaking change to the `ISystemFields` interface, specifically related to the `publish_details` field.
+
+## What Changed
+
+The `publish_details` field is no longer an array of objects. It is now represented as a single `IPublishDetails` object.
+
+This update aligns the generated types with the actual [Contentstack API](https://www.contentstack.com/docs/developers/apis/content-delivery-api) response.
+
+## Before
+
+```typescript
+export interface ISystemFields {
+  uid?: string;
+  created_at?: string;
+  updated_at?: string;
+  created_by?: string;
+  updated_by?: string;
+  _content_type_uid?: string;
+  tags?: string[];
+  ACL?: any[];
+  _version?: number;
+  _in_progress?: boolean;
+  locale?: string;
+  publish_details?: IPublishDetails[]; // Incorrect: Array of IPublishDetails
+  title?: string;
+}
+```
+
+## After
+
+```typescript
+export interface ISystemFields {
+  uid?: string;
+  created_at?: string;
+  updated_at?: string;
+  created_by?: string;
+  updated_by?: string;
+  _content_type_uid?: string;
+  tags?: string[];
+  ACL?: any[];
+  _version?: number;
+  _in_progress?: boolean;
+  locale?: string;
+  publish_details?: IPublishDetails; // Corrected: Single IPublishDetails object
+  title?: string;
+}
+```
+
+---
+
 ## Migrating from v2 to v3
+
 This document outlines the necessary changes to separate nested modular blocks into distinct interfaces. This update will affect how modular blocks are structured and used throughout the codebase.
 
-## Before 
+## Before
+
 ```typescript
 export interface Test {
   /** Version */
@@ -27,8 +81,8 @@ export interface Test {
 }
 ```
 
-
 ## After
+
 ```typescript
 export interface Test {
   /** Version */
@@ -39,7 +93,6 @@ export interface Test {
   modular_blocks?: ModularBlocks[];
 }
 
-
 export interface ModularBlocks {
   /** Multi Line Textbox */
   multi_line?: string;
@@ -53,4 +106,4 @@ export interface ModularBlocks1 {
   /** Multi Line Textbox */
   multi_line?: string;
 }
-```
\ No newline at end of file
+```
diff --git a/package-lock.json b/package-lock.json
index cdded65..ec75f32 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,18 +1,18 @@
 {
   "name": "contentstack-cli-tsgen",
-  "version": "3.5.1",
+  "version": "4.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "contentstack-cli-tsgen",
-      "version": "3.5.1",
+      "version": "4.0.0",
       "license": "MIT",
       "dependencies": {
         "@contentstack/cli-command": "^1.5.0",
         "@contentstack/cli-utilities": "^1.11.0",
-        "@contentstack/types-generator": "^2.3.3",
-        "dotenv": "^16.5.0"
+        "@contentstack/types-generator": "^3.0.0",
+        "dotenv": "^16.4.7"
       },
       "devDependencies": {
         "@oclif/plugin-help": "^6.2.27",
@@ -1588,15 +1588,15 @@
       }
     },
     "node_modules/@contentstack/types-generator": {
-      "version": "2.3.3",
-      "resolved": "https://registry.npmjs.org/@contentstack/types-generator/-/types-generator-2.3.3.tgz",
-      "integrity": "sha512-cK7szBWJIZ3EWhtfgnPY2QraO8cKhU8v16GXPWOS007tsD03bqLX+91Q2v/hKEyRlvZ/0LhaVhDET3MPzNNzVw==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/@contentstack/types-generator/-/types-generator-3.0.0.tgz",
+      "integrity": "sha512-gINeFlpZ/bAZDRdfRBi8qX97EkYIYmEo7fZUZeO+Dvq8JhWRSz3p1YeFA6fxjyBzbXkRvQ7zWqyhZNM6wvlwKA==",
       "license": "MIT",
       "dependencies": {
-        "@contentstack/delivery-sdk": "^4.6.1",
+        "@contentstack/delivery-sdk": "^4.7.0",
         "@gql2ts/from-schema": "^2.0.0-4",
         "async": "^3.2.6",
-        "axios": "^1.8.4",
+        "axios": "^1.9.0",
         "lodash": "^4.17.21",
         "prettier": "^3.5.3"
       }
diff --git a/package.json b/package.json
index b9789a7..b3a3cdd 100644
--- a/package.json
+++ b/package.json
@@ -1,14 +1,14 @@
 {
   "name": "contentstack-cli-tsgen",
   "description": "Generate TypeScript typings from a Stack.",
-  "version": "3.5.1",
+  "version": "4.0.0",
   "author": "Michael Davis",
   "bugs": "https://github.com/Contentstack-Solutions/contentstack-cli-tsgen/issues",
   "dependencies": {
     "@contentstack/cli-command": "^1.5.0",
     "@contentstack/cli-utilities": "^1.11.0",
-    "@contentstack/types-generator": "^2.3.3",
-    "dotenv": "^16.5.0"
+    "@contentstack/types-generator": "^3.0.0",
+    "dotenv": "^16.4.7"
   },
   "devDependencies": {
     "@oclif/plugin-help": "^6.2.27",