diff --git a/packages/@aws-cdk/custom-resource-handlers/lib/aws-eks/kubectl-handler/helm/__init__.py b/packages/@aws-cdk/custom-resource-handlers/lib/aws-eks/kubectl-handler/helm/__init__.py
index ddf0753a8aa6b..49b684851420e 100644
--- a/packages/@aws-cdk/custom-resource-handlers/lib/aws-eks/kubectl-handler/helm/__init__.py
+++ b/packages/@aws-cdk/custom-resource-handlers/lib/aws-eks/kubectl-handler/helm/__init__.py
@@ -101,7 +101,7 @@ def helm_handler(event, context):
 
 def get_oci_cmd(repository, version):
     # Generates OCI command based on pattern. Public ECR vs Private ECR are treated differently.
-    private_ecr_pattern = 'oci://(?P<registry>\d+\.dkr\.ecr\.(?P<region>[a-z0-9\-]+)\.amazonaws\.com(\.cn)?)*'
+    private_ecr_pattern = 'oci://(?P<registry>\d+\.dkr\.ecr\.(?P<region>[a-z0-9\-]+)\.(?P<domain>[a-z0-9\.-]+))*'
     public_ecr_pattern = 'oci://(?P<registry>public\.ecr\.aws)*'
 
     private_registry = re.match(private_ecr_pattern, repository).groupdict()
diff --git a/packages/aws-cdk-lib/aws-eks/test/helm-chart.test.ts b/packages/aws-cdk-lib/aws-eks/test/helm-chart.test.ts
index cb3804d4289e7..0974ebbf844e6 100644
--- a/packages/aws-cdk-lib/aws-eks/test/helm-chart.test.ts
+++ b/packages/aws-cdk-lib/aws-eks/test/helm-chart.test.ts
@@ -272,5 +272,15 @@ describe('helm chart', () => {
       // THEN
       Template.fromStack(stack).hasResourceProperties(eks.HelmChart.RESOURCE_TYPE, { SkipCrds: true });
     });
+    test('should use private ecr repo when specified', () => {
+      // GIVEN
+      const { stack, cluster } = testFixtureCluster();
+
+      // WHEN
+      new eks.HelmChart(stack, 'MyPrivateChart', { cluster, chart: 'chart', repository: 'oci://012345678.dkr.ecr.us-east-1.amazonaws.com/private-repo' });
+
+      // THEN
+      Template.fromStack(stack).hasResourceProperties(eks.HelmChart.RESOURCE_TYPE, { Repository: 'oci://012345678.dkr.ecr.us-east-1.amazonaws.com/private-repo' });
+    });
   });
 });