diff --git a/google/cloud/tpu_v2alpha1/__init__.py b/google/cloud/tpu_v2alpha1/__init__.py
index dd533d5..5ebcf45 100644
--- a/google/cloud/tpu_v2alpha1/__init__.py
+++ b/google/cloud/tpu_v2alpha1/__init__.py
@@ -45,6 +45,7 @@
     SchedulingConfig,
     ServiceAccount,
     ServiceIdentity,
+    ShieldedInstanceConfig,
     StartNodeRequest,
     StopNodeRequest,
     Symptom,
@@ -82,6 +83,7 @@
     "SchedulingConfig",
     "ServiceAccount",
     "ServiceIdentity",
+    "ShieldedInstanceConfig",
     "StartNodeRequest",
     "StopNodeRequest",
     "Symptom",
diff --git a/google/cloud/tpu_v2alpha1/types/__init__.py b/google/cloud/tpu_v2alpha1/types/__init__.py
index 3cacb25..da17d91 100644
--- a/google/cloud/tpu_v2alpha1/types/__init__.py
+++ b/google/cloud/tpu_v2alpha1/types/__init__.py
@@ -43,6 +43,7 @@
     SchedulingConfig,
     ServiceAccount,
     ServiceIdentity,
+    ShieldedInstanceConfig,
     StartNodeRequest,
     StopNodeRequest,
     Symptom,
@@ -79,6 +80,7 @@
     "SchedulingConfig",
     "ServiceAccount",
     "ServiceIdentity",
+    "ShieldedInstanceConfig",
     "StartNodeRequest",
     "StopNodeRequest",
     "Symptom",
diff --git a/google/cloud/tpu_v2alpha1/types/cloud_tpu.py b/google/cloud/tpu_v2alpha1/types/cloud_tpu.py
index ad544d2..e85e733 100644
--- a/google/cloud/tpu_v2alpha1/types/cloud_tpu.py
+++ b/google/cloud/tpu_v2alpha1/types/cloud_tpu.py
@@ -53,6 +53,7 @@
         "Symptom",
         "GetGuestAttributesRequest",
         "GetGuestAttributesResponse",
+        "ShieldedInstanceConfig",
     },
 )
 
@@ -350,6 +351,8 @@ class Node(proto.Message):
         symptoms (Sequence[google.cloud.tpu_v2alpha1.types.Symptom]):
             Output only. The Symptoms that have occurred
             to the TPU Node.
+        shielded_instance_config (google.cloud.tpu_v2alpha1.types.ShieldedInstanceConfig):
+            Shielded Instance options.
     """
 
     class State(proto.Enum):
@@ -481,6 +484,11 @@ class ApiVersion(proto.Enum):
         number=39,
         message="Symptom",
     )
+    shielded_instance_config = proto.Field(
+        proto.MESSAGE,
+        number=45,
+        message="ShieldedInstanceConfig",
+    )
 
 
 class ListNodesRequest(proto.Message):
@@ -1055,4 +1063,19 @@ class GetGuestAttributesResponse(proto.Message):
     )
 
 
+class ShieldedInstanceConfig(proto.Message):
+    r"""A set of Shielded Instance options.
+
+    Attributes:
+        enable_secure_boot (bool):
+            Defines whether the instance has Secure Boot
+            enabled.
+    """
+
+    enable_secure_boot = proto.Field(
+        proto.BOOL,
+        number=1,
+    )
+
+
 __all__ = tuple(sorted(__protobuf__.manifest))