diff --git a/framework/test_app/runners/k8s/k8s_xds_server_runner.py b/framework/test_app/runners/k8s/k8s_xds_server_runner.py
index 30cb0cf1..9b492d6e 100644
--- a/framework/test_app/runners/k8s/k8s_xds_server_runner.py
+++ b/framework/test_app/runners/k8s/k8s_xds_server_runner.py
@@ -37,6 +37,7 @@ class ServerDeploymentArgs:
     enable_csm_observability: bool = False
     csm_workload_name: str = ""
     csm_canonical_service_name: str = ""
+    enable_dualstack: bool = False
 
     def as_dict(self):
         return {
@@ -47,6 +48,7 @@ def as_dict(self):
             "enable_csm_observability": self.enable_csm_observability,
             "csm_workload_name": self.csm_workload_name,
             "csm_canonical_service_name": self.csm_canonical_service_name,
+            "enable_dualstack": self.enable_dualstack,
         }
 
 
@@ -109,7 +111,6 @@ def __init__(  # pylint: disable=too-many-locals
         debug_use_port_forwarding: bool = False,
         enable_workload_identity: bool = True,
         deployment_args: Optional[ServerDeploymentArgs] = None,
-        enable_dualstack: bool = False,
     ):
         super().__init__(
             k8s_namespace,
@@ -145,7 +146,6 @@ def __init__(  # pylint: disable=too-many-locals
         self.td_bootstrap_image = td_bootstrap_image
         self.network = network
         self.xds_server_uri = xds_server_uri
-        self.enable_dualstack = enable_dualstack
 
         # Workload identity settings:
         if self.enable_workload_identity:
@@ -228,7 +228,7 @@ def run(  # pylint: disable=arguments-differ,too-many-branches
                 app_label=self.app_label,
                 neg_name=self.gcp_neg_name,
                 test_port=test_port,
-                enable_dualstack=self.enable_dualstack,
+                enable_dualstack=self.deployment_args.enable_dualstack,
             )
         self._wait_service_neg_status_annotation(self.service_name, test_port)
 
diff --git a/framework/xds_k8s_testcase.py b/framework/xds_k8s_testcase.py
index f80c8e9d..c302af89 100644
--- a/framework/xds_k8s_testcase.py
+++ b/framework/xds_k8s_testcase.py
@@ -967,7 +967,6 @@ def initKubernetesServerRunner(self, **kwargs) -> KubernetesServerRunner:
             network=self.network,
             debug_use_port_forwarding=self.debug_use_port_forwarding,
             enable_workload_identity=self.enable_workload_identity,
-            enable_dualstack=self.enable_dualstack,
             **kwargs,
         )
 
@@ -1081,7 +1080,6 @@ def initKubernetesServerRunner(self, **kwargs) -> KubernetesServerRunner:
             xds_server_uri=self.xds_server_uri,
             deployment_template="server-secure.deployment.yaml",
             debug_use_port_forwarding=self.debug_use_port_forwarding,
-            enable_dualstack=self.enable_dualstack,
             **kwargs,
         )
 
diff --git a/tests/dualstack_test.py b/tests/dualstack_test.py
index 29ae5bdd..8b72099c 100644
--- a/tests/dualstack_test.py
+++ b/tests/dualstack_test.py
@@ -35,6 +35,8 @@
 
 _SERVERS_APP_LABEL: Final[str] = "psm-interop-dualstack"
 
+ServerDeploymentArgs = k8s_xds_server_runner.ServerDeploymentArgs
+
 
 class DualStackTest(xds_k8s_testcase.RegularXdsKubernetesTestCase):
     v4_server_runner: _KubernetesServerRunner = None
@@ -72,8 +74,8 @@ def setUp(self):
             debug_use_port_forwarding=self.debug_use_port_forwarding,
             reuse_namespace=True,
             reuse_service=True,
-            enable_dualstack=True,
             enable_workload_identity=self.enable_workload_identity,
+            deployment_args=ServerDeploymentArgs(enable_dualstack=True),
         )
 
         k8s_namespace = self.server_runner.k8s_namespace