diff --git a/build-tools/helm/spark-kubernetes-operator/values.schema.json b/build-tools/helm/spark-kubernetes-operator/values.schema.json
index 7a9e938a..9ff49b88 100644
--- a/build-tools/helm/spark-kubernetes-operator/values.schema.json
+++ b/build-tools/helm/spark-kubernetes-operator/values.schema.json
@@ -162,7 +162,7 @@
                   }
                 },
                 "volumeMounts": {
-                  "type": "object",
+                  "type": "array",
                   "description": "Container volume mounts",
                   "additionalProperties": true
                 },
@@ -304,7 +304,7 @@
               "additionalProperties": true
             },
             "volumes": {
-              "type": "object",
+              "type": "array",
               "description": "Pod volumes",
               "additionalProperties": true
             },