diff --git a/specification/resources/databases/models/advanced_config/opensearch_advanced_config.yml b/specification/resources/databases/models/advanced_config/opensearch_advanced_config.yml
index 7f01b863..1fe6c867 100644
--- a/specification/resources/databases/models/advanced_config/opensearch_advanced_config.yml
+++ b/specification/resources/databases/models/advanced_config/opensearch_advanced_config.yml
@@ -205,7 +205,7 @@ properties:
     type: integer
     example: 2500000
     minimum: 1
-    maximum: 9223372036854776000
+    maximum: 9223372036854775807
     default: 2500000
   ism_history_rollover_check_period_hours:
     description: >-