diff --git a/Model/Logger.php b/Model/Logger.php
index 92e64eb..77c2714 100644
--- a/Model/Logger.php
+++ b/Model/Logger.php
@@ -44,7 +44,7 @@ public function __construct(LoggerInterface $log, State $state)
     /**
      * {@inheritdoc}
      */
-    public function emergency($message, array $context = [])
+    public function emergency($message, array $context = []): void
     {
         $this->log->emergency('[TweakWise] ' . $message, $context);
     }
@@ -52,7 +52,7 @@ public function emergency($message, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function alert($message, array $context = [])
+    public function alert($message, array $context = []): void
     {
         $this->log->alert('[TweakWise] ' . $message, $context);
     }
@@ -60,7 +60,7 @@ public function alert($message, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function critical($message, array $context = [])
+    public function critical($message, array $context = []): void
     {
         $this->log->critical('[TweakWise] ' . $message, $context);
     }
@@ -68,7 +68,7 @@ public function critical($message, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function error($message, array $context = [])
+    public function error($message, array $context = []): void
     {
         $this->log->error('[TweakWise] ' . $message, $context);
     }
@@ -76,7 +76,7 @@ public function error($message, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function warning($message, array $context = [])
+    public function warning($message, array $context = []): void
     {
         $this->log->warning('[TweakWise] ' . $message, $context);
     }
@@ -84,7 +84,7 @@ public function warning($message, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function notice($message, array $context = [])
+    public function notice($message, array $context = []): void
     {
         $this->log->notice('[TweakWise] ' . $message, $context);
     }
@@ -92,7 +92,7 @@ public function notice($message, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function info($message, array $context = [])
+    public function info($message, array $context = []): void
     {
         $this->log->info('[TweakWise] ' . $message, $context);
     }
@@ -100,7 +100,7 @@ public function info($message, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function debug($message, array $context = [])
+    public function debug($message, array $context = []): void
     {
         if ($this->enableDebugLog) {
             $this->log->debug('[TweakWise] ' . $message, $context);
@@ -110,7 +110,7 @@ public function debug($message, array $context = [])
     /**
      * {@inheritdoc}
      */
-    public function log($level, $message, array $context = [])
+    public function log($level, $message, array $context = []): void
     {
         $this->log->log($level, '[TweakWise] ' . $message, $context);
     }
@@ -121,7 +121,7 @@ public function log($level, $message, array $context = [])
      * @param Exception $exception
      * @throws Exception
      */
-    public function throwException(Exception $exception)
+    public function throwException(Exception $exception): void
     {
         $this->log->error($exception->getMessage());
         throw $exception;