diff --git a/CHANGELOG.md b/CHANGELOG.md
index c1a83ac..0ba4dc3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,17 @@
+# v1.0.3
+
+## 09/11/2022
+
+1. [](#bugfix)
+    - Removed `mixed` type, for `PHP 7.4` compatibility.
+
+# v1.0.2
+
+## 09/11/2022
+
+1. [](#bugfix)
+    - Added vendor files.
+
 # v1.0.1
 
 ## 09/11/2022
diff --git a/whistleblower.php b/whistleblower.php
index 57edb67..6bde310 100644
--- a/whistleblower.php
+++ b/whistleblower.php
@@ -90,7 +90,7 @@ public function onPluginsInitialized(): void
         }
     }
 
-    public function executeEvent(mixed $_, String $key): void
+    public function executeEvent($_, String $key): void
     {
         call_user_func($this->events[$key]);
     }