diff --git a/oas_apivideo.yaml b/oas_apivideo.yaml
index a046079c..87668f2e 100644
--- a/oas_apivideo.yaml
+++ b/oas_apivideo.yaml
@@ -11787,7 +11787,6 @@ paths:
       x-client-action: getAggregatedMetrics
       x-group-parameters: true
       x-client-paginated: true
-      x-optional-object: true
       x-doctave:
         code-samples:
   '/data/buckets/{metric}/{breakdown}':
@@ -12035,7 +12034,6 @@ paths:
       x-client-action: getMetricsBreakdown
       x-group-parameters: true
       x-client-paginated: true
-      x-optional-object: true
       x-doctave:
         code-samples:
   '/data/timeseries/{metric}':
diff --git a/templates/nodejs/src/ObjectSerializer.ts.mustache b/templates/nodejs/src/ObjectSerializer.ts.mustache
index 670ee3e2..46a4c9f4 100644
--- a/templates/nodejs/src/ObjectSerializer.ts.mustache
+++ b/templates/nodejs/src/ObjectSerializer.ts.mustache
@@ -94,7 +94,7 @@ export default class ObjectSerializer {
 
         return data.getFullYear() + "-" + month + "-" + day;
       } else {
-        return data.toISOString();
+        return data.toISOString().split('.')[0] + 'Z';
       }
     } else {
       if (enumsMap.has(type)) {