diff --git a/src/Sentry/Laravel/Features/HttpClientIntegration.php b/src/Sentry/Laravel/Features/HttpClientIntegration.php
index d0d8723a..0d7d4d11 100644
--- a/src/Sentry/Laravel/Features/HttpClientIntegration.php
+++ b/src/Sentry/Laravel/Features/HttpClientIntegration.php
@@ -59,9 +59,11 @@ public function handleRequestSendingHandlerForTracing(RequestSending $event): vo
         $context->setDescription($event->request->method() . ' ' . $partialUri);
         $context->setData([
             'url' => $partialUri,
-            'http.request.method' => $event->request->method(),
+            // See: https://develop.sentry.dev/sdk/performance/span-data-conventions/#http
             'http.query' => $fullUri->getQuery(),
             'http.fragment' => $fullUri->getFragment(),
+            'http.request.method' => $event->request->method(),
+            'http.response_transfer_size' => $event->request->toPsrRequest()->getBody()->getSize(),
         ]);
 
         $this->pushSpan($parentSpan->startChild($context));
@@ -73,6 +75,11 @@ public function handleResponseReceivedHandlerForTracing(ResponseReceived $event)
 
         if ($span !== null) {
             $span->finish();
+            $span->setData(array_merge($span->getData(), [
+                // See: https://develop.sentry.dev/sdk/performance/span-data-conventions/#http
+                'http.response.status_code' => $event->response->status(),
+                'http.response_content_length' => $event->response->toPsrResponse()->getBody()->getSize(),
+            ]));
             $span->setHttpStatus($event->response->status());
         }
     }
@@ -104,12 +111,13 @@ public function handleResponseReceivedHandlerForBreadcrumb(ResponseReceived $eve
             null,
             [
                 'url' => $this->getPartialUri($fullUri),
-                'http.request.method' => $event->request->method(),
-                'http.response.status_code' => $event->response->status(),
+                // See: https://develop.sentry.dev/sdk/performance/span-data-conventions/#http
                 'http.query' => $fullUri->getQuery(),
                 'http.fragment' => $fullUri->getFragment(),
-                'http.request.body.size' => $event->request->toPsrRequest()->getBody()->getSize(),
-                'http.response.body.size' => $event->response->toPsrResponse()->getBody()->getSize(),
+                'http.request.method' => $event->request->method(),
+                'http.response.status_code' => $event->response->status(),
+                'http.response_transfer_size' => $event->request->toPsrRequest()->getBody()->getSize(),
+                'http.response_content_length' => $event->response->toPsrResponse()->getBody()->getSize(),
             ]
         ));
     }
@@ -125,10 +133,11 @@ public function handleConnectionFailedHandlerForBreadcrumb(ConnectionFailed $eve
             null,
             [
                 'url' => $this->getPartialUri($fullUri),
-                'http.request.method' => $event->request->method(),
+                // See: https://develop.sentry.dev/sdk/performance/span-data-conventions/#http
                 'http.query' => $fullUri->getQuery(),
                 'http.fragment' => $fullUri->getFragment(),
-                'http.request.body.size' => $event->request->toPsrRequest()->getBody()->getSize(),
+                'http.request.method' => $event->request->method(),
+                'http.response_transfer_size' => $event->request->toPsrRequest()->getBody()->getSize(),
             ]
         ));
     }
@@ -154,7 +163,7 @@ private function getFullUri(string $url): UriInterface
      */
     private function getPartialUri(UriInterface $uri): string
     {
-        return (string) Uri::fromParts([
+        return (string)Uri::fromParts([
             'scheme' => $uri->getScheme(),
             'host' => $uri->getHost(),
             'port' => $uri->getPort(),