diff --git a/values.schema.json b/values.schema.json
index 373f91d..b48d4af 100644
--- a/values.schema.json
+++ b/values.schema.json
@@ -356,7 +356,8 @@
                 "topologySpreadConstraints": {
                     "type": [
                         "null",
-                        "array"
+                        "array",
+                        "string"
                     ]
                 },
                 "webhookAnnotations": {