diff --git a/discovery/tpu-v1.json b/discovery/tpu-v1.json
index 22ceddd334..1acd84df29 100644
--- a/discovery/tpu-v1.json
+++ b/discovery/tpu-v1.json
@@ -659,7 +659,7 @@
       }
     }
   },
-  "revision": "20200814",
+  "revision": "20200909",
   "rootUrl": "https://tpu.googleapis.com/",
   "schemas": {
     "AcceleratorType": {
@@ -964,6 +964,14 @@
           ],
           "type": "string"
         },
+        "symptoms": {
+          "description": "Output only. The Symptoms that have occurred to the TPU Node.",
+          "items": {
+            "$ref": "Symptom"
+          },
+          "readOnly": true,
+          "type": "array"
+        },
         "tensorflowVersion": {
           "description": "The version of Tensorflow running in the Node. Required.",
           "type": "string"
@@ -1112,6 +1120,46 @@
       "properties": {},
       "type": "object"
     },
+    "Symptom": {
+      "description": "A Symptom instance.",
+      "id": "Symptom",
+      "properties": {
+        "createTime": {
+          "description": "Timestamp when the Symptom is created.",
+          "format": "google-datetime",
+          "type": "string"
+        },
+        "details": {
+          "description": "Detailed information of the current Symptom.",
+          "type": "string"
+        },
+        "symptomType": {
+          "description": "Type of the Symptom.",
+          "enum": [
+            "SYMPTOM_TYPE_UNSPECIFIED",
+            "LOW_MEMORY",
+            "OUT_OF_MEMORY",
+            "EXECUTE_TIMED_OUT",
+            "MESH_BUILD_FAIL",
+            "HBM_OUT_OF_MEMORY"
+          ],
+          "enumDescriptions": [
+            "Unspecified symptom.",
+            "TPU VM memory is low.",
+            "TPU runtime is out of memory.",
+            "TPU runtime execution has timed out.",
+            "TPU runtime fails to construct a mesh that recognizes each TPU device's neighbors.",
+            "TPU HBM is out of memory."
+          ],
+          "type": "string"
+        },
+        "workerId": {
+          "description": "A string used to uniquely distinguish a worker within a TPU node.",
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
     "TensorFlowVersion": {
       "description": "A tensorflow version that a Node can be configured with.",
       "id": "TensorFlowVersion",
diff --git a/discovery/tpu-v1alpha1.json b/discovery/tpu-v1alpha1.json
index 24a1375b2e..88b90567c8 100644
--- a/discovery/tpu-v1alpha1.json
+++ b/discovery/tpu-v1alpha1.json
@@ -659,7 +659,7 @@
       }
     }
   },
-  "revision": "20200814",
+  "revision": "20200909",
   "rootUrl": "https://tpu.googleapis.com/",
   "schemas": {
     "AcceleratorType": {
@@ -964,6 +964,14 @@
           ],
           "type": "string"
         },
+        "symptoms": {
+          "description": "Output only. The Symptoms that have occurred to the TPU Node.",
+          "items": {
+            "$ref": "Symptom"
+          },
+          "readOnly": true,
+          "type": "array"
+        },
         "tensorflowVersion": {
           "description": "The version of Tensorflow running in the Node. Required.",
           "type": "string"
@@ -1112,6 +1120,46 @@
       "properties": {},
       "type": "object"
     },
+    "Symptom": {
+      "description": "A Symptom instance.",
+      "id": "Symptom",
+      "properties": {
+        "createTime": {
+          "description": "Timestamp when the Symptom is created.",
+          "format": "google-datetime",
+          "type": "string"
+        },
+        "details": {
+          "description": "Detailed information of the current Symptom.",
+          "type": "string"
+        },
+        "symptomType": {
+          "description": "Type of the Symptom.",
+          "enum": [
+            "SYMPTOM_TYPE_UNSPECIFIED",
+            "LOW_MEMORY",
+            "OUT_OF_MEMORY",
+            "EXECUTE_TIMED_OUT",
+            "MESH_BUILD_FAIL",
+            "HBM_OUT_OF_MEMORY"
+          ],
+          "enumDescriptions": [
+            "Unspecified symptom.",
+            "TPU VM memory is low.",
+            "TPU runtime is out of memory.",
+            "TPU runtime execution has timed out.",
+            "TPU runtime fails to construct a mesh that recognizes each TPU device's neighbors.",
+            "TPU HBM is out of memory."
+          ],
+          "type": "string"
+        },
+        "workerId": {
+          "description": "A string used to uniquely distinguish a worker within a TPU node.",
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
     "TensorFlowVersion": {
       "description": "A tensorflow version that a Node can be configured with.",
       "id": "TensorFlowVersion",
diff --git a/src/apis/tpu/v1.ts b/src/apis/tpu/v1.ts
index dc8235b045..99daece158 100644
--- a/src/apis/tpu/v1.ts
+++ b/src/apis/tpu/v1.ts
@@ -320,6 +320,10 @@ export namespace tpu_v1 {
      * Output only. The current state for the TPU Node.
      */
     state?: string | null;
+    /**
+     * Output only. The Symptoms that have occurred to the TPU Node.
+     */
+    symptoms?: Schema$Symptom[];
     /**
      * The version of Tensorflow running in the Node. Required.
      */
@@ -434,6 +438,27 @@ export namespace tpu_v1 {
    * Request for StopNode.
    */
   export interface Schema$StopNodeRequest {}
+  /**
+   * A Symptom instance.
+   */
+  export interface Schema$Symptom {
+    /**
+     * Timestamp when the Symptom is created.
+     */
+    createTime?: string | null;
+    /**
+     * Detailed information of the current Symptom.
+     */
+    details?: string | null;
+    /**
+     * Type of the Symptom.
+     */
+    symptomType?: string | null;
+    /**
+     * A string used to uniquely distinguish a worker within a TPU node.
+     */
+    workerId?: string | null;
+  }
   /**
    * A tensorflow version that a Node can be configured with.
    */
@@ -1162,6 +1187,7 @@ export namespace tpu_v1 {
      *       //   "schedulingConfig": {},
      *       //   "serviceAccount": "my_serviceAccount",
      *       //   "state": "my_state",
+     *       //   "symptoms": [],
      *       //   "tensorflowVersion": "my_tensorflowVersion",
      *       //   "useServiceNetworking": false
      *       // }
@@ -1455,6 +1481,7 @@ export namespace tpu_v1 {
      *   //   "schedulingConfig": {},
      *   //   "serviceAccount": "my_serviceAccount",
      *   //   "state": "my_state",
+     *   //   "symptoms": [],
      *   //   "tensorflowVersion": "my_tensorflowVersion",
      *   //   "useServiceNetworking": false
      *   // }
diff --git a/src/apis/tpu/v1alpha1.ts b/src/apis/tpu/v1alpha1.ts
index 8291f1a976..c425d1d2e5 100644
--- a/src/apis/tpu/v1alpha1.ts
+++ b/src/apis/tpu/v1alpha1.ts
@@ -320,6 +320,10 @@ export namespace tpu_v1alpha1 {
      * Output only. The current state for the TPU Node.
      */
     state?: string | null;
+    /**
+     * Output only. The Symptoms that have occurred to the TPU Node.
+     */
+    symptoms?: Schema$Symptom[];
     /**
      * The version of Tensorflow running in the Node. Required.
      */
@@ -434,6 +438,27 @@ export namespace tpu_v1alpha1 {
    * Request for StopNode.
    */
   export interface Schema$StopNodeRequest {}
+  /**
+   * A Symptom instance.
+   */
+  export interface Schema$Symptom {
+    /**
+     * Timestamp when the Symptom is created.
+     */
+    createTime?: string | null;
+    /**
+     * Detailed information of the current Symptom.
+     */
+    details?: string | null;
+    /**
+     * Type of the Symptom.
+     */
+    symptomType?: string | null;
+    /**
+     * A string used to uniquely distinguish a worker within a TPU node.
+     */
+    workerId?: string | null;
+  }
   /**
    * A tensorflow version that a Node can be configured with.
    */
@@ -1162,6 +1187,7 @@ export namespace tpu_v1alpha1 {
      *       //   "schedulingConfig": {},
      *       //   "serviceAccount": "my_serviceAccount",
      *       //   "state": "my_state",
+     *       //   "symptoms": [],
      *       //   "tensorflowVersion": "my_tensorflowVersion",
      *       //   "useServiceNetworking": false
      *       // }
@@ -1455,6 +1481,7 @@ export namespace tpu_v1alpha1 {
      *   //   "schedulingConfig": {},
      *   //   "serviceAccount": "my_serviceAccount",
      *   //   "state": "my_state",
+     *   //   "symptoms": [],
      *   //   "tensorflowVersion": "my_tensorflowVersion",
      *   //   "useServiceNetworking": false
      *   // }