diff --git a/Spanner/metadata/Admin/Instance/V1/SpannerInstanceAdmin.php b/Spanner/metadata/Admin/Instance/V1/SpannerInstanceAdmin.php
index 3bca763a961b..fcdec075b285 100644
Binary files a/Spanner/metadata/Admin/Instance/V1/SpannerInstanceAdmin.php and b/Spanner/metadata/Admin/Instance/V1/SpannerInstanceAdmin.php differ
diff --git a/Spanner/src/Admin/Instance/V1/InstancePartition.php b/Spanner/src/Admin/Instance/V1/InstancePartition.php
index 31a36ed700fc..429a99fb976c 100644
--- a/Spanner/src/Admin/Instance/V1/InstancePartition.php
+++ b/Spanner/src/Admin/Instance/V1/InstancePartition.php
@@ -43,6 +43,15 @@ class InstancePartition extends \Google\Protobuf\Internal\Message
      * Generated from protobuf field <code>string display_name = 3 [(.google.api.field_behavior) = REQUIRED];</code>
      */
     protected $display_name = '';
+    /**
+     * Optional. The autoscaling configuration. Autoscaling is enabled if this
+     * field is set. When autoscaling is enabled, fields in compute_capacity are
+     * treated as OUTPUT_ONLY fields and reflect the current compute capacity
+     * allocated to the instance partition.
+     *
+     * Generated from protobuf field <code>.google.spanner.admin.instance.v1.AutoscalingConfig autoscaling_config = 13 [(.google.api.field_behavior) = OPTIONAL];</code>
+     */
+    protected $autoscaling_config = null;
     /**
      * Output only. The current instance partition state.
      *
@@ -132,6 +141,11 @@ class InstancePartition extends \Google\Protobuf\Internal\Message
      *           of processing units allocated to the instance partition.
      *           This might be zero in API responses for instance partitions that are not
      *           yet in the `READY` state.
+     *     @type \Google\Cloud\Spanner\Admin\Instance\V1\AutoscalingConfig $autoscaling_config
+     *           Optional. The autoscaling configuration. Autoscaling is enabled if this
+     *           field is set. When autoscaling is enabled, fields in compute_capacity are
+     *           treated as OUTPUT_ONLY fields and reflect the current compute capacity
+     *           allocated to the instance partition.
      *     @type int $state
      *           Output only. The current instance partition state.
      *     @type \Google\Protobuf\Timestamp $create_time
@@ -342,6 +356,48 @@ public function setProcessingUnits($var)
         return $this;
     }
 
+    /**
+     * Optional. The autoscaling configuration. Autoscaling is enabled if this
+     * field is set. When autoscaling is enabled, fields in compute_capacity are
+     * treated as OUTPUT_ONLY fields and reflect the current compute capacity
+     * allocated to the instance partition.
+     *
+     * Generated from protobuf field <code>.google.spanner.admin.instance.v1.AutoscalingConfig autoscaling_config = 13 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * @return \Google\Cloud\Spanner\Admin\Instance\V1\AutoscalingConfig|null
+     */
+    public function getAutoscalingConfig()
+    {
+        return $this->autoscaling_config;
+    }
+
+    public function hasAutoscalingConfig()
+    {
+        return isset($this->autoscaling_config);
+    }
+
+    public function clearAutoscalingConfig()
+    {
+        unset($this->autoscaling_config);
+    }
+
+    /**
+     * Optional. The autoscaling configuration. Autoscaling is enabled if this
+     * field is set. When autoscaling is enabled, fields in compute_capacity are
+     * treated as OUTPUT_ONLY fields and reflect the current compute capacity
+     * allocated to the instance partition.
+     *
+     * Generated from protobuf field <code>.google.spanner.admin.instance.v1.AutoscalingConfig autoscaling_config = 13 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * @param \Google\Cloud\Spanner\Admin\Instance\V1\AutoscalingConfig $var
+     * @return $this
+     */
+    public function setAutoscalingConfig($var)
+    {
+        GPBUtil::checkMessage($var, \Google\Cloud\Spanner\Admin\Instance\V1\AutoscalingConfig::class);
+        $this->autoscaling_config = $var;
+
+        return $this;
+    }
+
     /**
      * Output only. The current instance partition state.
      *