1 files changed, 5 insertions, 3 deletions
diff --git a/matrix-specification/Responses/ClientVersionsGetResponse.php b/matrix-specification/Responses/ClientVersionsGetResponse.php
index 9ec701d..44d2cd0 100644
--- a/matrix-specification/Responses/ClientVersionsGetResponse.php
+++ b/matrix-specification/Responses/ClientVersionsGetResponse.php
@@ -2,7 +2,9 @@
 
 namespace Matrix\Responses;
 
-class ClientVersionsGetResponse implements \JsonSerializable
+use Matrix\Response;
+
+class ClientVersionsGetResponse extends Response
 {
   /**
    * @param string[] $versions
@@ -14,11 +16,11 @@ class ClientVersionsGetResponse implements \JsonSerializable
   )
   {}
 
-  public function jsonSerialize(): array
+  public function getBody(): array
   {
     return array_filter([
       "unstable_features" => $this->unstableFeatures,
       "versions" => $this->versions,
-    ], "is_null");
+    ], fn ($value) => ! is_null($value));
   }
 }