diff --git a/src/PhpPact/Consumer/Matcher/Matchers/Equality.php b/src/PhpPact/Consumer/Matcher/Matchers/Equality.php
index 9c6e3a34..bbf779ee 100644
--- a/src/PhpPact/Consumer/Matcher/Matchers/Equality.php
+++ b/src/PhpPact/Consumer/Matcher/Matchers/Equality.php
@@ -16,9 +16,12 @@ public function __construct(private object|array|string|float|int|bool|null $val
     {
     }
 
-    public function jsonSerialize(): object
+    /**
+     * @return array<string, mixed>
+     */
+    public function jsonSerialize(): array
     {
-        return (object) [
+        return [
             'pact:matcher:type' => $this->getType(),
             'value'             => $this->value
         ];