diff --git a/src/Monolog/Formatter/LogmaticFormatter.php b/src/Monolog/Formatter/LogmaticFormatter.php
index cacd767b..83b93019 100644
--- a/src/Monolog/Formatter/LogmaticFormatter.php
+++ b/src/Monolog/Formatter/LogmaticFormatter.php
@@ -33,7 +33,7 @@ class LogmaticFormatter extends JsonFormatter
      *
      * @param string $hostname
      */
-    public function setHostname(String $hostname) {
+    public function setHostname(string $hostname) {
       $this->hostname = $hostname;
     }
 
@@ -42,7 +42,7 @@ class LogmaticFormatter extends JsonFormatter
      *
      * @param string $appname
      */
-    public function setAppname(String $appname) {
+    public function setAppname(string $appname) {
         $this->appname = $appname;
     }
 
diff --git a/src/Monolog/Handler/LogmaticHandler.php b/src/Monolog/Handler/LogmaticHandler.php
index b6eb67f8..043d89e8 100644
--- a/src/Monolog/Handler/LogmaticHandler.php
+++ b/src/Monolog/Handler/LogmaticHandler.php
@@ -64,7 +64,7 @@ class LogmaticHandler extends SocketHandler
     /**
      * {@inheritdoc}
      */
-    protected function generateDataStream($record): String
+    protected function generateDataStream($record): string
     {
         return $this->logToken . ' ' . $record['formatted'];
     }