diff --git a/src/Instagram/Auth/Login.php b/src/Instagram/Auth/Login.php
index f5094b1..0129a14 100644
--- a/src/Instagram/Auth/Login.php
+++ b/src/Instagram/Auth/Login.php
@@ -70,8 +70,11 @@ public function process(): CookieJar
 
         $html = (string) $baseRequest->getBody();
 
-        preg_match('/\"csrf_token\":\"(.*?)\"/', $html, $matches);
+        $pattern = '/{"csrf_token":"([^"]+)"}/';
+ 
 
+        preg_match($pattern, $html, $matches);
+ 
         if (!isset($matches[1])) {
             throw new InstagramAuthException('Unable to extract JSON data');
         }
@@ -145,7 +148,7 @@ public function withCookies(array $session): CookieJar
 
         $html = (string) $baseRequest->getBody();
 
-        preg_match('/\"csrf_token\":\"(.*?)\"/', $html, $matches);
+        preg_match('/\\\"csrf_token\\\":\\\"(.*?)\\\"/', $html, $matches);
 
         if (isset($matches[1])) {
             $data = $matches[1];