diff --git a/federationapi/routing/join.go b/federationapi/routing/join.go
index 6cadbd759..ada89e4a6 100644
--- a/federationapi/routing/join.go
+++ b/federationapi/routing/join.go
@@ -275,14 +275,13 @@ func SendJoin(
 		}
 	}
 
+	// https://matrix.org/docs/spec/server_server/latest#put-matrix-federation-v1-send-join-roomid-eventid
 	return util.JSONResponse{
 		Code: http.StatusOK,
 		JSON: gomatrixserverlib.RespSendJoin{
-			RespState: gomatrixserverlib.RespState{
-				StateEvents: gomatrixserverlib.UnwrapEventHeaders(stateAndAuthChainResponse.StateEvents),
-				AuthEvents:  gomatrixserverlib.UnwrapEventHeaders(stateAndAuthChainResponse.AuthChainEvents),
-			},
-			Origin: cfg.Matrix.ServerName,
+			StateEvents: gomatrixserverlib.UnwrapEventHeaders(stateAndAuthChainResponse.StateEvents),
+			AuthEvents:  gomatrixserverlib.UnwrapEventHeaders(stateAndAuthChainResponse.AuthChainEvents),
+			Origin:      cfg.Matrix.ServerName,
 		},
 	}
 }
diff --git a/go.mod b/go.mod
index 5188a7f59..fd1bb3d70 100644
--- a/go.mod
+++ b/go.mod
@@ -17,7 +17,7 @@ require (
 	github.com/matrix-org/go-http-js-libp2p v0.0.0-20200318135427-31631a9ef51f
 	github.com/matrix-org/go-sqlite3-js v0.0.0-20200325174927-327088cdef10
 	github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26
-	github.com/matrix-org/gomatrixserverlib v0.0.0-20200504153202-7542702abea6
+	github.com/matrix-org/gomatrixserverlib v0.0.0-20200505092542-ef8abbde3f6b
 	github.com/matrix-org/naffka v0.0.0-20200422140631-181f1ee7401f
 	github.com/matrix-org/util v0.0.0-20190711121626-527ce5ddefc7
 	github.com/mattn/go-sqlite3 v2.0.2+incompatible
diff --git a/go.sum b/go.sum
index 80839ead8..7ab035364 100644
--- a/go.sum
+++ b/go.sum
@@ -367,8 +367,8 @@ github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26 h1:Hr3zjRsq2bh
 github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26/go.mod h1:3fxX6gUjWyI/2Bt7J1OLhpCzOfO/bB3AiX0cJtEKud0=
 github.com/matrix-org/gomatrixserverlib v0.0.0-20200124100636-0c2ec91d1df5 h1:kmRjpmFOenVpOaV/DRlo9p6z/IbOKlUC+hhKsAAh8Qg=
 github.com/matrix-org/gomatrixserverlib v0.0.0-20200124100636-0c2ec91d1df5/go.mod h1:FsKa2pWE/bpQql9H7U4boOPXFoJX/QcqaZZ6ijLkaZI=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20200504153202-7542702abea6 h1:CnU+0kV1xzpvzEkFr1tX7c9BTWCTFOIlBPM1XD9I++c=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20200504153202-7542702abea6/go.mod h1:JsAzE1Ll3+gDWS9JSUHPJiiyAksvOOnGWF2nXdg4ZzU=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20200505092542-ef8abbde3f6b h1:gxLun/noFJ7DplX7rqT8E4v4NkeDJ45tqW7LXC6k4C4=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20200505092542-ef8abbde3f6b/go.mod h1:JsAzE1Ll3+gDWS9JSUHPJiiyAksvOOnGWF2nXdg4ZzU=
 github.com/matrix-org/naffka v0.0.0-20200127221512-0716baaabaf1 h1:osLoFdOy+ChQqVUn2PeTDETFftVkl4w9t/OW18g3lnk=
 github.com/matrix-org/naffka v0.0.0-20200127221512-0716baaabaf1/go.mod h1:cXoYQIENbdWIQHt1SyCo6Bl3C3raHwJ0wgVrXHSqf+A=
 github.com/matrix-org/naffka v0.0.0-20200422140631-181f1ee7401f h1:pRz4VTiRCO4zPlEMc3ESdUOcW4PXHH4Kj+YDz1XyE+Y=