diff --git a/go/chromiumos/dut_tracking.pb.go b/go/chromiumos/dut_tracking.pb.go
index 5fc3377..f03fbbe 100644
--- a/go/chromiumos/dut_tracking.pb.go
+++ b/go/chromiumos/dut_tracking.pb.go
@@ -68,10 +68,12 @@
 	// Number of hours to lookback for Swarming stats.
 	LookbackHours int32 `protobuf:"zigzag32,4,opt,name=lookback_hours,json=lookbackHours,proto3" json:"lookback_hours,omitempty"`
 	// Dimensions that are only needed to query tasks.
-	TaskDimensions       []*SwarmingDimension `protobuf:"bytes,5,rep,name=task_dimensions,json=taskDimensions,proto3" json:"task_dimensions,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}             `json:"-"`
-	XXX_unrecognized     []byte               `json:"-"`
-	XXX_sizecache        int32                `json:"-"`
+	TaskDimensions []*SwarmingDimension `protobuf:"bytes,5,rep,name=task_dimensions,json=taskDimensions,proto3" json:"task_dimensions,omitempty"`
+	// Swarming instance name:  chromeos-swarming.appspot.com
+	SwarmingInstance     string   `protobuf:"bytes,6,opt,name=swarming_instance,json=swarmingInstance,proto3" json:"swarming_instance,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
 func (m *TrackingPolicy) Reset()         { *m = TrackingPolicy{} }
@@ -134,6 +136,13 @@
 	return nil
 }
 
+func (m *TrackingPolicy) GetSwarmingInstance() string {
+	if m != nil {
+		return m.SwarmingInstance
+	}
+	return ""
+}
+
 // Defines a root message.
 type TrackingPolicyCfg struct {
 	// All tracking policies.
@@ -184,28 +193,30 @@
 func init() { proto.RegisterFile("chromiumos/dut_tracking.proto", fileDescriptor_31a1fc16820a6989) }
 
 var fileDescriptor_31a1fc16820a6989 = []byte{
-	// 364 bytes of a gzipped FileDescriptorProto
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-	0x00, 0x00, 0xff, 0xff, 0x0f, 0x99, 0x8b, 0xba, 0x41, 0x02, 0x00, 0x00,
+	// 387 bytes of a gzipped FileDescriptorProto
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+	0x02, 0x00, 0x00,
 }
diff --git a/src/chromiumos/dut_tracking.proto b/src/chromiumos/dut_tracking.proto
index a831e0b..3256ed7 100644
--- a/src/chromiumos/dut_tracking.proto
+++ b/src/chromiumos/dut_tracking.proto
@@ -35,6 +35,8 @@
   sint32 lookback_hours = 4;
   // Dimensions that are only needed to query tasks.
   repeated chromiumos.SwarmingDimension task_dimensions = 5;
+  // Swarming instance name:  chromeos-swarming.appspot.com
+  string swarming_instance = 6;
 }
 
 // Defines a root message.