diff --git a/api/api_worker.go b/api/api_worker.go
index fa54cb5e8..dbad20651 100644
--- a/api/api_worker.go
+++ b/api/api_worker.go
@@ -22,4 +22,6 @@ type WorkerApi interface {
 
 	storage.Sealer
 	Fetch(context.Context, abi.SectorID, stores.SectorFileType, bool) error
+
+	Closing(context.Context) (<-chan struct{}, error)
 }
diff --git a/api/apistruct/struct.go b/api/apistruct/struct.go
index 4855a36bf..8b68e9c79 100644
--- a/api/apistruct/struct.go
+++ b/api/apistruct/struct.go
@@ -227,6 +227,8 @@ type WorkerStruct struct {
 		FinalizeSector func(context.Context, abi.SectorID) error                                                                                                                                                  `perm:"admin"`
 
 		Fetch func(context.Context, abi.SectorID, stores.SectorFileType, bool) error `perm:"admin"`
+
+		Closing func(context.Context) (<-chan struct{}, error) `perm:"admin"`
 	}
 }
 
@@ -816,6 +818,10 @@ func (w *WorkerStruct) Fetch(ctx context.Context, id abi.SectorID, fileType stor
 	return w.Internal.Fetch(ctx, id, fileType, b)
 }
 
+func (w *WorkerStruct) Closing(ctx context.Context) (<-chan struct{}, error) {
+	return w.Internal.Closing(ctx)
+}
+
 var _ api.Common = &CommonStruct{}
 var _ api.FullNode = &FullNodeStruct{}
 var _ api.StorageMiner = &StorageMinerStruct{}
diff --git a/go.mod b/go.mod
index e855882a4..26a4198d6 100644
--- a/go.mod
+++ b/go.mod
@@ -26,7 +26,7 @@ require (
 	github.com/filecoin-project/go-paramfetch v0.0.2-0.20200218225740-47c639bab663
 	github.com/filecoin-project/go-statestore v0.1.0
 	github.com/filecoin-project/go-storedcounter v0.0.0-20200421200003-1c99c62e8a5b
-	github.com/filecoin-project/sector-storage v0.0.0-20200429155855-7f1c9c89e735
+	github.com/filecoin-project/sector-storage v0.0.0-20200501181153-e4a9a16161e9
 	github.com/filecoin-project/specs-actors v0.3.0
 	github.com/filecoin-project/specs-storage v0.0.0-20200417134612-61b2d91a6102
 	github.com/filecoin-project/storage-fsm v0.0.0-20200427182014-01487d5ad3c8
diff --git a/go.sum b/go.sum
index aeb734355..928cb2b9b 100644
--- a/go.sum
+++ b/go.sum
@@ -177,8 +177,8 @@ github.com/filecoin-project/go-storedcounter v0.0.0-20200421200003-1c99c62e8a5b
 github.com/filecoin-project/go-storedcounter v0.0.0-20200421200003-1c99c62e8a5b/go.mod h1:Q0GQOBtKf1oE10eSXSlhN45kDBdGvEcVOqMiffqX+N8=
 github.com/filecoin-project/lotus v0.2.10/go.mod h1:om5PQA9ZT0lf16qI7Fz/ZGLn4LDCMqPC8ntZA9uncRE=
 github.com/filecoin-project/sector-storage v0.0.0-20200411000242-61616264b16d/go.mod h1:/yueJueMh0Yc+0G1adS0lhnedcSnjY86EjKsA20+DVY=
-github.com/filecoin-project/sector-storage v0.0.0-20200429155855-7f1c9c89e735 h1:dzhoQvScipNNexk7Jcgspgf+QLun+gT7FYBdDMMnqgE=
-github.com/filecoin-project/sector-storage v0.0.0-20200429155855-7f1c9c89e735/go.mod h1:q/V90xaSKTlu7KovS0uj+cAvlPPFrGn141ZO3iQNEdw=
+github.com/filecoin-project/sector-storage v0.0.0-20200501181153-e4a9a16161e9 h1:WG6rFyhbhwWNpB0IExJJpXA8ok4Dduwws/Qy9FYTYfc=
+github.com/filecoin-project/sector-storage v0.0.0-20200501181153-e4a9a16161e9/go.mod h1:hvyaNnvsjZ4D/5tq78GWZJ39uTStLJcHRp7cWPeVBgY=
 github.com/filecoin-project/specs-actors v0.0.0-20200210130641-2d1fbd8672cf/go.mod h1:xtDZUB6pe4Pksa/bAJbJ693OilaC5Wbot9jMhLm3cZA=
 github.com/filecoin-project/specs-actors v0.0.0-20200409043918-e569f4a2f504/go.mod h1:mdJraXq5vMy0+/FqVQIrnNlpQ/Em6zeu06G/ltQ0/lA=
 github.com/filecoin-project/specs-actors v0.2.0/go.mod h1:nQYnFbQ7Y0bHZyq6HDEuVlCPR+U3z5Q3wMOQ+2aiV+Y=
diff --git a/lib/jsonrpc/rpc_test.go b/lib/jsonrpc/rpc_test.go
index 16edaf9ca..241228e7c 100644
--- a/lib/jsonrpc/rpc_test.go
+++ b/lib/jsonrpc/rpc_test.go
@@ -378,7 +378,6 @@ func TestChan(t *testing.T) {
 	require.Equal(t, false, ok)
 }
 
-
 func TestChanServerClose(t *testing.T) {
 	var client struct {
 		Sub func(context.Context, int, int) (<-chan int, error)