diff --git a/packages/project-aws/src/pulumi/apps/core/CoreOpenSearch.ts b/packages/project-aws/src/pulumi/apps/core/CoreOpenSearch.ts
index 3a00e7d027..441505fa5b 100644
--- a/packages/project-aws/src/pulumi/apps/core/CoreOpenSearch.ts
+++ b/packages/project-aws/src/pulumi/apps/core/CoreOpenSearch.ts
@@ -42,7 +42,7 @@ function getProdClusterConfig(): aws.types.input.opensearch.DomainClusterConfig
     };
 }
 
-const OS_ENGINE_VERSION = "OpenSearch_2.11";
+const OS_ENGINE_VERSION = "OpenSearch_3.1";
 
 export const OpenSearch = createAppModule({
     name: "OpenSearch",