diff --git a/src/ZM/Command/CommandInteractTrait.php b/src/ZM/Command/CommandInteractTrait.php
index 02ee99a5..7f06de9d 100644
--- a/src/ZM/Command/CommandInteractTrait.php
+++ b/src/ZM/Command/CommandInteractTrait.php
@@ -25,7 +25,7 @@ trait CommandInteractTrait
      * @param string  $message
      * @param mixed[] $context
      */
-    public function emergency($message, array $context = [])
+    public function emergency($message, array $context = []): void
     {
         $this->log(LogLevel::EMERGENCY, $message, $context);
     }
@@ -39,7 +39,7 @@ trait CommandInteractTrait
      * @param string  $message
      * @param mixed[] $context
      */
-    public function alert($message, array $context = [])
+    public function alert($message, array $context = []): void
     {
         $this->log(LogLevel::ALERT, $message, $context);
     }
@@ -52,7 +52,7 @@ trait CommandInteractTrait
      * @param string  $message
      * @param mixed[] $context
      */
-    public function critical($message, array $context = [])
+    public function critical($message, array $context = []): void
     {
         $this->log(LogLevel::CRITICAL, $message, $context);
     }
@@ -64,7 +64,7 @@ trait CommandInteractTrait
      * @param string  $message
      * @param mixed[] $context
      */
-    public function error($message, array $context = [])
+    public function error($message, array $context = []): void
     {
         $this->log(LogLevel::ERROR, $message, $context);
     }
@@ -78,7 +78,7 @@ trait CommandInteractTrait
      * @param string  $message
      * @param mixed[] $context
      */
-    public function warning($message, array $context = [])
+    public function warning($message, array $context = []): void
     {
         $this->log(LogLevel::WARNING, $message, $context);
     }
@@ -89,7 +89,7 @@ trait CommandInteractTrait
      * @param string  $message
      * @param mixed[] $context
      */
-    public function notice($message, array $context = [])
+    public function notice($message, array $context = []): void
     {
         $this->log(LogLevel::NOTICE, $message, $context);
     }
@@ -101,7 +101,7 @@ trait CommandInteractTrait
      *
      * @param string $message
      */
-    public function info($message, array $context = [])
+    public function info($message, array $context = []): void
     {
         $this->log(LogLevel::INFO, $message, $context);
     }
@@ -111,12 +111,12 @@ trait CommandInteractTrait
      *
      * @param string $message
      */
-    public function debug($message, array $context = [])
+    public function debug($message, array $context = []): void
     {
         $this->log(LogLevel::DEBUG, $message, $context);
     }
 
-    public function log($level, $message, array $context = [])
+    public function log($level, $message, array $context = []): void
     {
         $msg = match ($level) {
             'info' => "<info>{$message}</info>",