diff --git a/packages/aws-cdk-lib/aws-rds/lib/instance-engine.ts b/packages/aws-cdk-lib/aws-rds/lib/instance-engine.ts
index 9ed03ee7da226..601063f816318 100644
--- a/packages/aws-cdk-lib/aws-rds/lib/instance-engine.ts
+++ b/packages/aws-cdk-lib/aws-rds/lib/instance-engine.ts
@@ -1669,6 +1669,8 @@ export class PostgresEngineVersion {
   public static readonly VER_16_2 = PostgresEngineVersion.of('16.2', '16', { s3Import: true, s3Export: true });
   /** Version "16.3". */
   public static readonly VER_16_3 = PostgresEngineVersion.of('16.3', '16', { s3Import: true, s3Export: true });
+  /** Version "16.4". */
+  public static readonly VER_16_4 = PostgresEngineVersion.of('16.4', '16', { s3Import: true, s3Export: true });
 
   /**
    * Create a new PostgresEngineVersion with an arbitrary version.