diff --git a/packages/@aws-cdk/aws-neptune-alpha/lib/cluster.ts b/packages/@aws-cdk/aws-neptune-alpha/lib/cluster.ts
index d8df337c8772d..ad42f53fc78a9 100644
--- a/packages/@aws-cdk/aws-neptune-alpha/lib/cluster.ts
+++ b/packages/@aws-cdk/aws-neptune-alpha/lib/cluster.ts
@@ -80,6 +80,10 @@ export class EngineVersion {
    * Neptune engine version 1.3.0.0
    */
   public static readonly V1_3_0_0 = new EngineVersion('1.3.0.0');
+  /**
+   * Neptune engine version 1.3.1.0
+   */
+  public static readonly V1_3_1_0 = new EngineVersion('1.3.1.0');
 
   /**
    * Constructor for specifying a custom engine version