diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index 77264d5..101487b 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        php-version: [8.1, 7.3]
+        php-version: [8.1, 7.4]
 
     steps:
     - uses: actions/checkout@v2
diff --git a/composer.lock b/composer.lock
index 46212a7..9f6cc75 100644
--- a/composer.lock
+++ b/composer.lock
@@ -196,16 +196,16 @@
         },
         {
             "name": "guzzlehttp/promises",
-            "version": "2.0.3",
+            "version": "2.0.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/promises.git",
-                "reference": "6ea8dd08867a2a42619d65c3deb2c0fcbf81c8f8"
+                "reference": "f9c436286ab2892c7db7be8c8da4ef61ccf7b455"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/promises/zipball/6ea8dd08867a2a42619d65c3deb2c0fcbf81c8f8",
-                "reference": "6ea8dd08867a2a42619d65c3deb2c0fcbf81c8f8",
+                "url": "https://api.github.com/repos/guzzle/promises/zipball/f9c436286ab2892c7db7be8c8da4ef61ccf7b455",
+                "reference": "f9c436286ab2892c7db7be8c8da4ef61ccf7b455",
                 "shasum": ""
             },
             "require": {
@@ -259,7 +259,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/promises/issues",
-                "source": "https://github.com/guzzle/promises/tree/2.0.3"
+                "source": "https://github.com/guzzle/promises/tree/2.0.4"
             },
             "funding": [
                 {
@@ -275,7 +275,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2024-07-18T10:29:17+00:00"
+            "time": "2024-10-17T10:06:22+00:00"
         },
         {
             "name": "guzzlehttp/psr7",
@@ -741,16 +741,16 @@
         },
         {
             "name": "symfony/deprecation-contracts",
-            "version": "v2.5.3",
+            "version": "v2.5.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/deprecation-contracts.git",
-                "reference": "80d075412b557d41002320b96a096ca65aa2c98d"
+                "reference": "605389f2a7e5625f273b53960dc46aeaf9c62918"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/deprecation-contracts/zipball/80d075412b557d41002320b96a096ca65aa2c98d",
-                "reference": "80d075412b557d41002320b96a096ca65aa2c98d",
+                "url": "https://api.github.com/repos/symfony/deprecation-contracts/zipball/605389f2a7e5625f273b53960dc46aeaf9c62918",
+                "reference": "605389f2a7e5625f273b53960dc46aeaf9c62918",
                 "shasum": ""
             },
             "require": {
@@ -758,12 +758,12 @@
             },
             "type": "library",
             "extra": {
+                "thanks": {
+                    "url": "https://github.com/symfony/contracts",
+                    "name": "symfony/contracts"
+                },
                 "branch-alias": {
                     "dev-main": "2.5-dev"
-                },
-                "thanks": {
-                    "name": "symfony/contracts",
-                    "url": "https://github.com/symfony/contracts"
                 }
             },
             "autoload": {
@@ -788,7 +788,7 @@
             "description": "A generic function and convention to trigger deprecation notices",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/deprecation-contracts/tree/v2.5.3"
+                "source": "https://github.com/symfony/deprecation-contracts/tree/v2.5.4"
             },
             "funding": [
                 {
@@ -804,7 +804,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-01-24T14:02:46+00:00"
+            "time": "2024-09-25T14:11:13+00:00"
         },
         {
             "name": "symfony/polyfill-ctype",
@@ -832,8 +832,8 @@
             "type": "library",
             "extra": {
                 "thanks": {
-                    "name": "symfony/polyfill",
-                    "url": "https://github.com/symfony/polyfill"
+                    "url": "https://github.com/symfony/polyfill",
+                    "name": "symfony/polyfill"
                 }
             },
             "autoload": {
@@ -911,8 +911,8 @@
             "type": "library",
             "extra": {
                 "thanks": {
-                    "name": "symfony/polyfill",
-                    "url": "https://github.com/symfony/polyfill"
+                    "url": "https://github.com/symfony/polyfill",
+                    "name": "symfony/polyfill"
                 }
             },
             "autoload": {
@@ -985,8 +985,8 @@
             "type": "library",
             "extra": {
                 "thanks": {
-                    "name": "symfony/polyfill",
-                    "url": "https://github.com/symfony/polyfill"
+                    "url": "https://github.com/symfony/polyfill",
+                    "name": "symfony/polyfill"
                 }
             },
             "autoload": {
@@ -1203,16 +1203,16 @@
         },
         {
             "name": "myclabs/deep-copy",
-            "version": "1.12.0",
+            "version": "1.12.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "3a6b9a42cd8f8771bd4295d13e1423fa7f3d942c"
+                "reference": "123267b2c49fbf30d78a7b2d333f6be754b94845"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/3a6b9a42cd8f8771bd4295d13e1423fa7f3d942c",
-                "reference": "3a6b9a42cd8f8771bd4295d13e1423fa7f3d942c",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/123267b2c49fbf30d78a7b2d333f6be754b94845",
+                "reference": "123267b2c49fbf30d78a7b2d333f6be754b94845",
                 "shasum": ""
             },
             "require": {
@@ -1251,7 +1251,7 @@
             ],
             "support": {
                 "issues": "https://github.com/myclabs/DeepCopy/issues",
-                "source": "https://github.com/myclabs/DeepCopy/tree/1.12.0"
+                "source": "https://github.com/myclabs/DeepCopy/tree/1.12.1"
             },
             "funding": [
                 {
@@ -1259,20 +1259,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2024-06-12T14:39:25+00:00"
+            "time": "2024-11-08T17:47:46+00:00"
         },
         {
             "name": "nikic/php-parser",
-            "version": "v5.2.0",
+            "version": "v5.4.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/nikic/PHP-Parser.git",
-                "reference": "23c79fbbfb725fb92af9bcf41065c8e9a0d49ddb"
+                "reference": "447a020a1f875a434d62f2a401f53b82a396e494"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/nikic/PHP-Parser/zipball/23c79fbbfb725fb92af9bcf41065c8e9a0d49ddb",
-                "reference": "23c79fbbfb725fb92af9bcf41065c8e9a0d49ddb",
+                "url": "https://api.github.com/repos/nikic/PHP-Parser/zipball/447a020a1f875a434d62f2a401f53b82a396e494",
+                "reference": "447a020a1f875a434d62f2a401f53b82a396e494",
                 "shasum": ""
             },
             "require": {
@@ -1315,9 +1315,9 @@
             ],
             "support": {
                 "issues": "https://github.com/nikic/PHP-Parser/issues",
-                "source": "https://github.com/nikic/PHP-Parser/tree/v5.2.0"
+                "source": "https://github.com/nikic/PHP-Parser/tree/v5.4.0"
             },
-            "time": "2024-09-15T16:40:33+00:00"
+            "time": "2024-12-30T11:07:19+00:00"
         },
         {
             "name": "phar-io/manifest",
@@ -1758,16 +1758,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.6.21",
+            "version": "9.6.22",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "de6abf3b6f8dd955fac3caad3af7a9504e8c2ffa"
+                "reference": "f80235cb4d3caa59ae09be3adf1ded27521d1a9c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/de6abf3b6f8dd955fac3caad3af7a9504e8c2ffa",
-                "reference": "de6abf3b6f8dd955fac3caad3af7a9504e8c2ffa",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/f80235cb4d3caa59ae09be3adf1ded27521d1a9c",
+                "reference": "f80235cb4d3caa59ae09be3adf1ded27521d1a9c",
                 "shasum": ""
             },
             "require": {
@@ -1778,7 +1778,7 @@
                 "ext-mbstring": "*",
                 "ext-xml": "*",
                 "ext-xmlwriter": "*",
-                "myclabs/deep-copy": "^1.12.0",
+                "myclabs/deep-copy": "^1.12.1",
                 "phar-io/manifest": "^2.0.4",
                 "phar-io/version": "^3.2.1",
                 "php": ">=7.3",
@@ -1841,7 +1841,7 @@
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
                 "security": "https://github.com/sebastianbergmann/phpunit/security/policy",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.21"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.22"
             },
             "funding": [
                 {
@@ -1857,7 +1857,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2024-09-19T10:50:18+00:00"
+            "time": "2024-12-05T13:48:26+00:00"
         },
         {
             "name": "sebastian/cli-parser",
@@ -2824,16 +2824,16 @@
         },
         {
             "name": "squizlabs/php_codesniffer",
-            "version": "3.10.3",
+            "version": "3.11.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPCSStandards/PHP_CodeSniffer.git",
-                "reference": "62d32998e820bddc40f99f8251958aed187a5c9c"
+                "reference": "1368f4a58c3c52114b86b1abe8f4098869cb0079"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHPCSStandards/PHP_CodeSniffer/zipball/62d32998e820bddc40f99f8251958aed187a5c9c",
-                "reference": "62d32998e820bddc40f99f8251958aed187a5c9c",
+                "url": "https://api.github.com/repos/PHPCSStandards/PHP_CodeSniffer/zipball/1368f4a58c3c52114b86b1abe8f4098869cb0079",
+                "reference": "1368f4a58c3c52114b86b1abe8f4098869cb0079",
                 "shasum": ""
             },
             "require": {
@@ -2900,7 +2900,7 @@
                     "type": "open_collective"
                 }
             ],
-            "time": "2024-09-18T10:38:58+00:00"
+            "time": "2024-12-11T16:04:26+00:00"
         },
         {
             "name": "theseer/tokenizer",
diff --git a/src/SDK/DescopeSDK.php b/src/SDK/DescopeSDK.php
index 2bf29c2..4e028a3 100644
--- a/src/SDK/DescopeSDK.php
+++ b/src/SDK/DescopeSDK.php
@@ -14,6 +14,7 @@
 use Descope\SDK\EndpointsV1;
 use Descope\SDK\EndpointsV2;
 use Descope\SDK\Exception\AuthException;
+use Descope\SDK\Exception\ValidateException;
 
 use Descope\SDK\Management\MgmtV1;
 
@@ -66,7 +67,7 @@ public function verify($sessionToken = null): bool
         $sessionToken = $sessionToken ?? $_COOKIE[EndpointsV1::$SESSION_COOKIE_NAME] ?? null;
 
         if (!$sessionToken) {
-            throw new \InvalidArgumentException('Session token cannot be null or empty.');
+            throw ValidationException::forMissingSessionToken();
         }
 
         $verifier = new Verifier($this->config, $this->api);
@@ -85,7 +86,7 @@ public function refreshSession($refreshToken = null): array
         $refreshToken = $refreshToken ?? $_COOKIE[EndpointsV1::$REFRESH_COOKIE_NAME] ?? null;
 
         if (empty($refreshToken)) {
-            throw new \InvalidArgumentException('Refresh token cannot be null or empty.');
+            throw ValidationException::forMissingRefreshToken();
         }
 
         try {
@@ -116,7 +117,7 @@ public function verifyAndRefreshSession($sessionToken = null, $refreshToken = nu
         $refreshToken = $refreshToken ?? $_COOKIE[EndpointsV1::$REFRESH_COOKIE_NAME] ?? null;
 
         if (empty($sessionToken) || empty($refreshToken)) {
-            throw new \InvalidArgumentException('Session or refresh token cannot be null or empty.');
+            throw new ValidateException('Session or refresh token cannot be null or empty.');
         }
         
         try {
@@ -139,7 +140,7 @@ public function getClaims($token = null): array
         $token = $token ?? $_COOKIE[EndpointsV1::$SESSION_COOKIE_NAME] ?? null;
 
         if (!$token) {
-            throw new \InvalidArgumentException('Session token cannot be null or empty.');
+            throw ValidationException::forMissingSessionToken();
         }
 
         $extractor = new Extractor($this->config);
@@ -158,7 +159,7 @@ public function getUserDetails(string $refreshToken = null): array
         $refreshToken = $refreshToken ?? $_COOKIE[EndpointsV1::$REFRESH_COOKIE_NAME] ?? null;
 
         if (!$refreshToken) {
-            throw new \InvalidArgumentException('Refresh token cannot be null or empty.');
+            throw ValidationException::forMissingRefreshToken();
         }
 
         try {
@@ -186,7 +187,7 @@ public function logout(string $refreshToken = null): void
         $refreshToken = $refreshToken ?? $_COOKIE[EndpointsV1::$REFRESH_COOKIE_NAME] ?? null;
 
         if (!$refreshToken) {
-            throw new \InvalidArgumentException('Refresh token cannot be null or empty.');
+            throw ValidationException::forMissingRefreshToken();
         }
 
         try {
@@ -216,7 +217,7 @@ public function logoutAll(string $refreshToken = null): void
         $refreshToken = $refreshToken ?? $_COOKIE[EndpointsV1::$REFRESH_COOKIE_NAME] ?? null;
 
         if (!$refreshToken) {
-            throw new \InvalidArgumentException('Refresh token cannot be null or empty.');
+            throw ValidationException::forMissingRefreshToken();
         }
 
         try {
diff --git a/src/SDK/Exception/ValidateException.php b/src/SDK/Exception/ValidateException.php
new file mode 100644
index 0000000..a5fa4ae
--- /dev/null
+++ b/src/SDK/Exception/ValidateException.php
@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Descope\SDK\Exception;
+
+use Exception;
+use Throwable;
+
+final class ValidationException extends Exception implements DescopeException
+{
+    /**
+     * @var string
+     */
+    public const MSG_REFRESH_TOKEN_MISSING = 'Refresh token cannot be null or empty.';
+
+    /**
+     * @var string
+     */
+    public const MSG_SESSION_TOKEN_MISSING = 'Session token cannot be null or empty.';
+
+    /**
+     * @var string
+     */
+    public const MSG_INVALID_TOKEN_TYPE = 'Invalid token type provided.';
+
+    /**
+     * Factory method to create an exception for a missing refresh token.
+     *
+     * @return self
+     */
+    public static function forMissingRefreshToken(): self
+    {
+        return new self(self::MSG_REFRESH_TOKEN_MISSING);
+    }
+
+    /**
+     * Factory method to create an exception for a missing session token.
+     *
+     * @return self
+     */
+    public static function forMissingSessionToken(): self
+    {
+        return new self(self::MSG_SESSION_TOKEN_MISSING);
+    }
+
+    /**
+     * Factory method to create an exception for an invalid token type.
+     *
+     * @param string $tokenType The invalid token type.
+     * @return self
+     */
+    public static function forInvalidTokenType(string $tokenType): self
+    {
+        return new self(sprintf('%s: %s', self::MSG_INVALID_TOKEN_TYPE, $tokenType));
+    }
+}
\ No newline at end of file