diff --git a/packages/@aws-cdk/aws-neptune/lib/cluster.ts b/packages/@aws-cdk/aws-neptune/lib/cluster.ts
index 316795c23a491..f3c735b78f2c7 100644
--- a/packages/@aws-cdk/aws-neptune/lib/cluster.ts
+++ b/packages/@aws-cdk/aws-neptune/lib/cluster.ts
@@ -229,6 +229,12 @@ export interface IDatabaseCluster extends IResource, ec2.IConnectable {
    */
   readonly clusterIdentifier: string;
 
+  /**
+   * Resource identifier of the cluster
+   * @attribute ClusterResourceId
+   */
+  readonly clusterResourceIdentifier: string;
+
   /**
    * The endpoint to use for read/write operations
    * @attribute Endpoint,Port
@@ -266,6 +272,11 @@ export interface DatabaseClusterAttributes {
    */
   readonly clusterIdentifier: string;
 
+  /**
+   * Resource Identifier for the cluster
+   */
+  readonly clusterResourceIdentifier: string;
+
   /**
    * Cluster endpoint address
    */
@@ -293,6 +304,7 @@ export abstract class DatabaseClusterBase extends Resource implements IDatabaseC
         defaultPort: this.defaultPort,
       });
       public readonly clusterIdentifier = attrs.clusterIdentifier;
+      public readonly clusterResourceIdentifier = attrs.clusterResourceIdentifier;
       public readonly clusterEndpoint = new Endpoint(attrs.clusterEndpointAddress, attrs.port);
       public readonly clusterReadEndpoint = new Endpoint(attrs.readerEndpointAddress, attrs.port);
       protected enableIamAuthentication = true;
@@ -306,6 +318,11 @@ export abstract class DatabaseClusterBase extends Resource implements IDatabaseC
    */
   public abstract readonly clusterIdentifier: string;
 
+  /**
+   * Resource identifier of the cluster
+   */
+  public abstract readonly clusterResourceIdentifier: string;
+
   /**
    * The endpoint to use for read/write operations
    */
@@ -339,7 +356,7 @@ export abstract class DatabaseClusterBase extends Resource implements IDatabaseC
           'neptune-db',
           Aws.REGION,
           Aws.ACCOUNT_ID,
-          `${this.clusterIdentifier}/*`,
+          `${this.clusterResourceIdentifier}/*`,
         ].join(':'),
       ],
     });
diff --git a/packages/@aws-cdk/aws-neptune/test/cluster.test.ts b/packages/@aws-cdk/aws-neptune/test/cluster.test.ts
index 6bb933e34dab5..842b907e76ea0 100644
--- a/packages/@aws-cdk/aws-neptune/test/cluster.test.ts
+++ b/packages/@aws-cdk/aws-neptune/test/cluster.test.ts
@@ -339,6 +339,7 @@ describe('DatabaseCluster', () => {
     const cluster = DatabaseCluster.fromDatabaseClusterAttributes(stack, 'Database', {
       clusterEndpointAddress: 'addr',
       clusterIdentifier: 'identifier',
+      clusterResourceIdentifier: 'resourceIdentifier',
       port: 3306,
       readerEndpointAddress: 'reader-address',
       securityGroup: ec2.SecurityGroup.fromSecurityGroupId(stack, 'SG', 'sg-123456789', {
@@ -360,6 +361,7 @@ describe('DatabaseCluster', () => {
     const cluster = DatabaseCluster.fromDatabaseClusterAttributes(stack, 'Database', {
       clusterEndpointAddress: 'addr',
       clusterIdentifier: 'identifier',
+      clusterResourceIdentifier: 'resourceIdentifier',
       port: 3306,
       readerEndpointAddress: 'reader-address',
       securityGroup: ec2.SecurityGroup.fromSecurityGroupId(stack, 'SG', 'sg-123456789', {
@@ -474,7 +476,29 @@ describe('DatabaseCluster', () => {
           Effect: 'Allow',
           Action: 'neptune-db:*',
           Resource: {
-            'Fn::Join': ['', ['arn:', { Ref: 'AWS::Partition' }, ':neptune-db:', { Ref: 'AWS::Region' }, ':', { Ref: 'AWS::AccountId' }, ':', { Ref: 'ClusterEB0386A7' }, '/*']],
+            'Fn::Join': [
+              '', [
+                'arn:', {
+                  Ref: 'AWS::Partition',
+                },
+                ':neptune-db:',
+                {
+                  Ref: 'AWS::Region',
+                },
+                ':',
+                {
+                  Ref: 'AWS::AccountId',
+                },
+                ':',
+                {
+                  'Fn::GetAtt': [
+                    'ClusterEB0386A7',
+                    'ClusterResourceId',
+                  ],
+                },
+                '/*',
+              ],
+            ],
           },
         }],
         Version: '2012-10-17',