diff --git a/src/plugins/vis_type_timeseries/server/routes/post_vis_schema.ts b/src/plugins/vis_type_timeseries/server/routes/post_vis_schema.ts
index c74d1dd72d761..e8838f57ae365 100644
--- a/src/plugins/vis_type_timeseries/server/routes/post_vis_schema.ts
+++ b/src/plugins/vis_type_timeseries/server/routes/post_vis_schema.ts
@@ -66,6 +66,7 @@ const backgroundColorRulesItems = schema.object({
   id: stringOptionalNullable,
   background_color: stringOptionalNullable,
   color: stringOptionalNullable,
+  operator: stringOptionalNullable,
 });
 
 const gaugeColorRulesItems = schema.object({
@@ -73,7 +74,7 @@ const gaugeColorRulesItems = schema.object({
   text: stringOptionalNullable,
   id: stringOptionalNullable,
   operator: stringOptionalNullable,
-  value: schema.number(),
+  value: schema.maybe(schema.nullable(schema.number())),
 });
 const metricsItems = schema.object({
   field: stringOptionalNullable,