diff --git a/.eslintrc.json b/.eslintrc.json
new file mode 100644
index 000000000..4d9d6119f
--- /dev/null
+++ b/.eslintrc.json
@@ -0,0 +1,16 @@
+{
+    "env": {
+        "browser": true,
+        "es2021": true,
+        "jquery": true
+    },
+    "extends": "eslint:recommended",
+    "parserOptions": {
+        "ecmaVersion": "latest",
+        "sourceType": "module"
+    },
+    "rules": {
+        "no-unused-vars": "warn",
+        "no-undef": "warn"
+    }
+}
diff --git a/Gruntfile.js b/Gruntfile.js
index 77cbc58e6..7f562be77 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -76,16 +76,6 @@ module.exports = function (grunt) {
                     flatten: true
                 }]
             },
-            'jquery-ui-nested': {
-                files: [{
-                    expand: true,
-                    src: [
-                        nodeDir + '/jquery-ui-nested/jquery-ui-nested.js',
-                    ],
-                    dest: assetsDir + '/jquery-ui-nested',
-                    flatten: true
-                }]
-            },
             'spectrum-colorpicker': {
                 files: [
                     {
@@ -224,7 +214,6 @@ module.exports = function (grunt) {
         },
         sass: {
             options: {
-                implementation: require('node-sass'),
                 style: 'nested'
             },
             dist: {
diff --git a/README.md b/README.md
index f1b607d94..1f87bb353 100755
--- a/README.md
+++ b/README.md
@@ -134,6 +134,14 @@ Want to help create a pull request from you clone, just make sure of few things
 * Request a feature branch if your pull request make major changes in our project or if you really need one.
 * Create a new issue before making any pull request.
 
+### Developer Notes
+
+**Removal of `pclzip/pclzip`**
+
+The `pclzip/pclzip` library has been removed from the project's dependencies. Developers should now use PHP's native `ZipArchive` class for all ZIP file operations. This change was made to reduce the number of external dependencies and rely on PHP's built-in capabilities, which can lead to better performance and security.
+
+For more information on using `ZipArchive`, please refer to the [official PHP documentation](https://www.php.net/manual/en/class.ziparchive.php).
+
 ### Support
 For any support related query, please visit our official support forum.
 
diff --git a/composer.json b/composer.json
index 73c8a4fb5..53c83de42 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
     "optimize-autoloader": true
   },
   "require": {
-    "php": ">=7.2.0",
+    "php": ">=8.0",
     "ext-ctype": "*",
     "ext-json": "*",
     "ext-openssl": "*",
@@ -42,17 +42,17 @@
     "ext-mbstring": "*",
     "ext-gd": "*",
     "ezyang/htmlpurifier": "4.17.*",
-    "phpmailer/phpmailer": "6.5.*",
-    "pclzip/pclzip": "2.8.*",
-    "phpseclib/phpseclib": "2.0.*",
+    "phpmailer/phpmailer": "^6.9.1",
+    "phpseclib/phpseclib": "^3.0",
     "pensiero/php-openssl-cryptor": "0.1.*",
-    "google/recaptcha": "1.1.*",
-    "gettext/gettext": "4.8.*",
+    "google/recaptcha": "^1.3.0",
+    "gettext/gettext": "^5.0",
     "phpseclib/mcrypt_compat": "^1.0"
   }
   ,
   "require-dev": {
-    "roave/security-advisories": "dev-latest"
+    "roave/security-advisories": "dev-latest",
+    "phpstan/phpstan": "^1.10"
   },
   "suggest": {
     "ext-apcu": "Fast PHP user cache",
diff --git a/oc-load.php b/oc-load.php
index 11958f7f0..7a7e14ece 100755
--- a/oc-load.php
+++ b/oc-load.php
@@ -126,7 +126,6 @@
 //osc_register_script('fancybox', osc_assets_url('js/fancybox/jquery.fancybox.pack.js'), array('jquery'));
 
 osc_register_script('jquery-treeview', osc_assets_url('jquery-treeview/jquery.treeview.js'), 'jquery');
-osc_register_script('jquery-nested', osc_assets_url('jquery-ui-nested/jquery-ui-nested.js'), 'jquery-ui');
 osc_register_script('jquery-validate', osc_assets_url('jquery-validation/jquery.validate.min.js'), 'jquery');
 osc_register_script('jquery-validate-additional', osc_assets_url('jquery-validation/additional-methods.min.js'), 'jquery-validate');
 
diff --git a/package.json b/package.json
index e0e5c1e20..d4b03436c 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "osclass",
   "devDependencies": {
     "@popperjs/core": "^2.9.2",
-    "eslint": "^6.8.0",
+    "eslint": "^8.0.0",
     "grunt": "^1.4.1",
     "grunt-cli": "^1.4.3",
     "grunt-contrib-clean": "^2.0.0",
@@ -10,7 +10,7 @@
     "grunt-contrib-uglify": "^5.2.2",
     "grunt-sass": "^3.1.0",
     "load-grunt-tasks": "^5.1.0",
-    "node-sass": "^9.0.0"
+    "sass": "^1.70.0"
   },
   "description": "Osclass is a free and open script to create your advertisement or listings site. Best features: Plugins, themes, multi-language, CAPTCHA, dashboard, SEO friendly.",
   "scripts": {
@@ -28,19 +28,18 @@
   },
   "homepage": "https://github.com/mindstellar/Osclass#readme",
   "dependencies": {
-    "bootstrap": "^5.0.*",
-    "bootstrap-icons": "^1.5.0",
-    "chart.js": "^3.5.0",
-    "jquery": "^3.6.0",
-    "jquery-migrate": "^3.3.2",
+    "bootstrap": "^5.3.0",
+    "bootstrap-icons": "^1.11.0",
+    "chart.js": "^4.4.0",
+    "jquery": "^3.7.0",
+    "jquery-migrate": "^3.4.1",
     "jquery-treeview": "^1.4.*",
-    "jquery-ui-dist": "^1.12.*",
-    "jquery-ui-nested": "^1.3.*",
+    "jquery-ui-dist": "^1.13.0",
     "jquery-validation": "^1.19.3",
     "npm-font-open-sans": "^1.1.*",
-    "osclass-legacy-assets": "github:mindstellar/osclass-legacy-assets#master",
+    "osclass-legacy-assets": "github:mindstellar/osclass-legacy-assets#8e05ff7ff33db46ba7a453376e00721f4fd9e72f",
     "sortablejs": "^1.14.0",
     "spectrum-colorpicker": "^1.8.*",
-    "tinymce": "^7.0.1"
+    "tinymce": "^7.1.0"
   }
 }
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 000000000..98d2bc584
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,11 @@
+parameters:
+    level: 0 # Start at the lowest level
+    paths:
+        - oc-admin
+        - oc-content
+        - oc-includes
+        # Add other relevant source directories if any
+    bootstrapFiles:
+        - oc-load.php
+    checkMissingIterableValueType: false
+    checkGenericClassInNonGenericObjectType: false