diff --git a/src/Annotations/AbstractAnnotation.php b/src/Annotations/AbstractAnnotation.php
index 23297b907..ec5ffa36f 100644
--- a/src/Annotations/AbstractAnnotation.php
+++ b/src/Annotations/AbstractAnnotation.php
@@ -237,6 +237,7 @@ public function __debugInfo()
 
     /**
      * Customize the way json_encode() renders the annotations.
+     * @return mixed
      */
     #[\ReturnTypeWillChange]
     public function jsonSerialize()
diff --git a/src/Annotations/Operation.php b/src/Annotations/Operation.php
index eb02c12de..5878625c9 100644
--- a/src/Annotations/Operation.php
+++ b/src/Annotations/Operation.php
@@ -141,7 +141,9 @@ abstract class Operation extends AbstractAnnotation
         'Swagger\Annotations\ExternalDocumentation' => 'externalDocs'
     ];
 
-    /** @inheritdoc */
+    /**
+     * @return mixed
+     */
     #[\ReturnTypeWillChange]
     public function jsonSerialize()
     {
diff --git a/src/Logger.php b/src/Logger.php
index c19d35066..0ec849ea8 100644
--- a/src/Logger.php
+++ b/src/Logger.php
@@ -30,6 +30,7 @@ protected function __construct()
         /**
          * @param \Exception|string $entry
          * @param int $type Error type
+         * @return void
          */
         $this->log = function ($entry, $type) {
             if ($entry instanceof Exception) {