diff --git a/HttpServer/Client/ClientAbstracts.php b/HttpServer/Client/ClientAbstracts.php
index 9a21447f..257117ad 100644
--- a/HttpServer/Client/ClientAbstracts.php
+++ b/HttpServer/Client/ClientAbstracts.php
@@ -86,6 +86,15 @@ abstract class ClientAbstracts extends Component implements IClient
 	}
 
 
+	/**
+	 * @param string $contentType
+	 */
+	public function setContentType(string $contentType)
+	{
+		$this->header['Content-Type'] = $contentType;
+	}
+
+
 	/**
 	 * @param string $path
 	 * @param array $params
diff --git a/HttpServer/Client/IClient.php b/HttpServer/Client/IClient.php
index 9029c188..3cd0d7f1 100644
--- a/HttpServer/Client/IClient.php
+++ b/HttpServer/Client/IClient.php
@@ -207,4 +207,9 @@ interface IClient
 	public function setConnectTimeout(int $connect_timeout);
 
 
+	/**
+	 * @param string $contentType
+	 * @return mixed
+	 */
+	public function setContentType(string $contentType);
 }