diff --git a/src/github.com/matrix-org/dendrite/clientapi/routing/room_tagging.go b/src/github.com/matrix-org/dendrite/clientapi/routing/room_tagging.go
index 8c2a9988e..87484bb41 100644
--- a/src/github.com/matrix-org/dendrite/clientapi/routing/room_tagging.go
+++ b/src/github.com/matrix-org/dendrite/clientapi/routing/room_tagging.go
@@ -20,15 +20,15 @@ import (
 
 	"github.com/matrix-org/dendrite/clientapi/auth/storage/accounts"
 	"github.com/matrix-org/dendrite/clientapi/httputil"
-	"github.com/matrix-org/dendrite/common"
+	"github.com/matrix-org/gomatrix"
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/matrix-org/util"
 )
 
-// newMTag creates and returns a new MTag type
-func newMTag() common.MTag {
-	return common.MTag{
-		Tags: make(map[string]common.TagProperties),
+// newTag creates and returns a new Tag type
+func newTag() gomatrix.TagContent {
+	return gomatrix.TagContent{
+		Tags: make(map[string]gomatrix.TagProperties),
 	}
 }
 
@@ -39,7 +39,7 @@ func GetTag(
 	userID string,
 	roomID string,
 ) util.JSONResponse {
-	mtag := newMTag()
+	Tag := newTag()
 
 	localpart, _, err := gomatrixserverlib.SplitID('@', userID)
 	if err != nil {
@@ -47,7 +47,7 @@ func GetTag(
 	}
 
 	data, err := accountDB.GetAccountDataByType(
-		req.Context(), localpart, roomID, "m.tag",
+		req.Context(), localpart, roomID, "tag",
 	)
 
 	if err != nil {
@@ -58,7 +58,7 @@ func GetTag(
 	if err != nil {
 		httputil.LogThenError(req, err)
 	}
-	err = json.Unmarshal(dataByte, &mtag)
+	err = json.Unmarshal(dataByte, &Tag)
 
 	if err != nil {
 		httputil.LogThenError(req, err)
@@ -66,7 +66,7 @@ func GetTag(
 
 	return util.JSONResponse{
 		Code: http.StatusOK,
-		JSON: mtag,
+		JSON: Tag,
 	}
 }
 
@@ -83,8 +83,8 @@ func PutTag(
 	if err != nil {
 		return httputil.LogThenError(req, err)
 	}
-	mtag := newMTag()
-	var properties common.TagProperties
+	Tag := newTag()
+	var properties gomatrix.TagProperties
 
 	if reqErr := httputil.UnmarshalJSONRequest(req, &properties); reqErr != nil {
 		return *reqErr
@@ -95,12 +95,12 @@ func PutTag(
 		if err != nil {
 			httputil.LogThenError(req, err)
 		}
-		if err = json.Unmarshal(dataByte, &mtag); err != nil {
+		if err = json.Unmarshal(dataByte, &Tag); err != nil {
 			return httputil.LogThenError(req, err)
 		}
 	}
-	mtag.Tags[tag] = properties
-	addDataToDB(req, localpart, roomID, accountDB, mtag)
+	Tag.Tags[tag] = properties
+	addDataToDB(req, localpart, roomID, accountDB, Tag)
 
 	return util.JSONResponse{
 		Code: http.StatusOK,
@@ -121,17 +121,18 @@ func DeleteTag(
 	if err != nil {
 		return httputil.LogThenError(req, err)
 	}
-	mtag := newMTag()
+	Tag := newTag()
 
 	if len(data) > 0 {
 		dataByte, err := json.Marshal(data)
 		if err != nil {
 			httputil.LogThenError(req, err)
 		}
-		if err := json.Unmarshal(dataByte, &mtag); err != nil {
+		if err := json.Unmarshal(dataByte, &Tag); err != nil {
 			return httputil.LogThenError(req, err)
 		}
 	} else {
+		//Synapse returns a 200 OK response on finding no Tags, same policy is followed here.
 		return util.JSONResponse{
 			Code: http.StatusOK,
 			JSON: struct{}{},
@@ -139,15 +140,16 @@ func DeleteTag(
 	}
 
 	// Check whether the Tag to be deleted exists
-	if _, ok := mtag.Tags[tag]; ok {
-		delete(mtag.Tags, tag)
+	if _, ok := Tag.Tags[tag]; ok {
+		delete(Tag.Tags, tag)
 	} else {
+		//Synapse returns a 200 OK response on finding no Tags, same policy is followed here.
 		return util.JSONResponse{
 			Code: http.StatusOK,
 			JSON: struct{}{},
 		}
 	}
-	addDataToDB(req, localpart, roomID, accountDB, mtag)
+	addDataToDB(req, localpart, roomID, accountDB, Tag)
 
 	return util.JSONResponse{
 		Code: http.StatusOK,
@@ -168,7 +170,7 @@ func obtainSavedTags(
 	}
 
 	data, err := accountDB.GetAccountDataByType(
-		req.Context(), localpart, roomID, "m.tag",
+		req.Context(), localpart, roomID, "tag",
 	)
 	if err != nil {
 		return "", []gomatrixserverlib.ClientEvent{}, err
@@ -183,14 +185,14 @@ func addDataToDB(
 	localpart string,
 	roomID string,
 	accountDB *accounts.Database,
-	mtag common.MTag,
+	Tag gomatrix.TagContent,
 ) {
-	newTagData, err := json.Marshal(mtag)
+	newTagData, err := json.Marshal(Tag)
 	if err != nil {
 		httputil.LogThenError(req, err)
 	}
 	if err = accountDB.SaveAccountData(
-		req.Context(), localpart, roomID, "m.tag", string(newTagData),
+		req.Context(), localpart, roomID, "tag", string(newTagData),
 	); err != nil {
 		httputil.LogThenError(req, err)
 	}
diff --git a/src/github.com/matrix-org/dendrite/common/types.go b/src/github.com/matrix-org/dendrite/common/types.go
index 0362dfb98..e539774e2 100644
--- a/src/github.com/matrix-org/dendrite/common/types.go
+++ b/src/github.com/matrix-org/dendrite/common/types.go
@@ -46,16 +46,6 @@ type DisplayName struct {
 // recognized by strconv.ParseBool
 type WeakBoolean bool
 
-// MTag contains the data for a Tag which can be referenced by the Tag name
-type MTag struct {
-	Tags map[string]TagProperties `json:"tags"`
-}
-
-// TagProperties contains the properties of an MTag
-type TagProperties struct {
-	Order float32 `json:"order,omitempty"` // Empty values must be neglected
-}
-
 // UnmarshalJSON is overridden here to allow strings vaguely representing a true
 // or false boolean to be set as their closest counterpart
 func (b *WeakBoolean) UnmarshalJSON(data []byte) error {
diff --git a/vendor/manifest b/vendor/manifest
index 03ce1fe90..34185c51a 100644
--- a/vendor/manifest
+++ b/vendor/manifest
@@ -142,7 +142,7 @@
 		{
 			"importpath": "github.com/matrix-org/gomatrix",
 			"repository": "https://github.com/matrix-org/gomatrix",
-			"revision": "a7fc80c8060c2544fe5d4dae465b584f8e9b4e27",
+			"revision": "51f01ddc3d93b709449b011bfc67a72a611b1510",
 			"branch": "master"
 		},
 		{
diff --git a/vendor/src/github.com/matrix-org/gomatrix/client.go b/vendor/src/github.com/matrix-org/gomatrix/client.go
index 90a07c681..728f23ffe 100644
--- a/vendor/src/github.com/matrix-org/gomatrix/client.go
+++ b/vendor/src/github.com/matrix-org/gomatrix/client.go
@@ -13,6 +13,7 @@ import (
 	"net/url"
 	"path"
 	"strconv"
+	"strings"
 	"sync"
 	"time"
 )
@@ -68,6 +69,10 @@ func (cli *Client) BuildBaseURL(urlPath ...string) string {
 	parts := []string{hsURL.Path}
 	parts = append(parts, urlPath...)
 	hsURL.Path = path.Join(parts...)
+	// Manually add the trailing slash back to the end of the path if it's explicitly needed
+	if strings.HasSuffix(urlPath[len(urlPath)-1], "/") {
+		hsURL.Path = hsURL.Path + "/"
+	}
 	query := hsURL.Query()
 	if cli.AccessToken != "" {
 		query.Set("access_token", cli.AccessToken)
@@ -529,7 +534,7 @@ func (cli *Client) ForgetRoom(roomID string) (resp *RespForgetRoom, err error) {
 // InviteUser invites a user to a room. See http://matrix.org/docs/spec/client_server/r0.2.0.html#post-matrix-client-r0-rooms-roomid-invite
 func (cli *Client) InviteUser(roomID string, req *ReqInviteUser) (resp *RespInviteUser, err error) {
 	u := cli.BuildURL("rooms", roomID, "invite")
-	_, err = cli.MakeRequest("POST", u, struct{}{}, &resp)
+	_, err = cli.MakeRequest("POST", u, req, &resp)
 	return
 }
 
diff --git a/vendor/src/github.com/matrix-org/gomatrix/events.go b/vendor/src/github.com/matrix-org/gomatrix/events.go
index 7427740e3..1a828037e 100644
--- a/vendor/src/github.com/matrix-org/gomatrix/events.go
+++ b/vendor/src/github.com/matrix-org/gomatrix/events.go
@@ -14,6 +14,8 @@ type Event struct {
 	ID        string                 `json:"event_id"`            // The unique ID of this event
 	RoomID    string                 `json:"room_id"`             // The room the event was sent to. May be nil (e.g. for presence)
 	Content   map[string]interface{} `json:"content"`             // The JSON content of the event.
+	Redacts   string                 `json:"redacts,omitempty"`   // The event ID that was redacted if a m.room.redaction event
+	Unsigned  map[string]interface{} `json:"unsigned"`            // The unsigned portions of the event, such as age and prev_content
 }
 
 // Body returns the value of the "body" key in the event content if it is
diff --git a/vendor/src/github.com/matrix-org/gomatrix/filter.go b/vendor/src/github.com/matrix-org/gomatrix/filter.go
index e4e762873..2a0c37fac 100644
--- a/vendor/src/github.com/matrix-org/gomatrix/filter.go
+++ b/vendor/src/github.com/matrix-org/gomatrix/filter.go
@@ -14,6 +14,8 @@
 
 package gomatrix
 
+import "errors"
+
 //Filter is used by clients to specify how the server should filter responses to e.g. sync requests
 //Specified by: https://matrix.org/docs/spec/client_server/r0.2.0.html#filtering
 type Filter struct {
@@ -21,23 +23,68 @@ type Filter struct {
 	EventFields []string   `json:"event_fields,omitempty"`
 	EventFormat string     `json:"event_format,omitempty"`
 	Presence    FilterPart `json:"presence,omitempty"`
-	Room        struct {
-		AccountData  FilterPart `json:"account_data,omitempty"`
-		Ephemeral    FilterPart `json:"ephemeral,omitempty"`
-		IncludeLeave bool       `json:"include_leave,omitempty"`
-		NotRooms     []string   `json:"not_rooms,omitempty"`
-		Rooms        []string   `json:"rooms,omitempty"`
-		State        FilterPart `json:"state,omitempty"`
-		Timeline     FilterPart `json:"timeline,omitempty"`
-	} `json:"room,omitempty"`
+	Room        RoomFilter `json:"room,omitempty"`
 }
 
-type FilterPart struct {
-	NotRooms   []string `json:"not_rooms,omitempty"`
-	Rooms      []string `json:"rooms,omitempty"`
-	Limit      *int     `json:"limit,omitempty"`
-	NotSenders []string `json:"not_senders,omitempty"`
-	NotTypes   []string `json:"not_types,omitempty"`
-	Senders    []string `json:"senders,omitempty"`
-	Types      []string `json:"types,omitempty"`
+// RoomFilter is used to define filtering rules for room events
+type RoomFilter struct {
+	AccountData  FilterPart `json:"account_data,omitempty"`
+	Ephemeral    FilterPart `json:"ephemeral,omitempty"`
+	IncludeLeave bool       `json:"include_leave,omitempty"`
+	NotRooms     []string   `json:"not_rooms,omitempty"`
+	Rooms        []string   `json:"rooms,omitempty"`
+	State        FilterPart `json:"state,omitempty"`
+	Timeline     FilterPart `json:"timeline,omitempty"`
+}
+
+// FilterPart is used to define filtering rules for specific categories of events
+type FilterPart struct {
+	NotRooms    []string `json:"not_rooms,omitempty"`
+	Rooms       []string `json:"rooms,omitempty"`
+	Limit       int      `json:"limit,omitempty"`
+	NotSenders  []string `json:"not_senders,omitempty"`
+	NotTypes    []string `json:"not_types,omitempty"`
+	Senders     []string `json:"senders,omitempty"`
+	Types       []string `json:"types,omitempty"`
+	ContainsURL *bool    `json:"contains_url,omitempty"`
+}
+
+// Validate checks if the filter contains valid property values
+func (filter *Filter) Validate() error {
+	if filter.EventFormat != "client" && filter.EventFormat != "federation" {
+		return errors.New("Bad event_format value. Must be one of [\"client\", \"federation\"]")
+	}
+	return nil
+}
+
+// DefaultFilter returns the default filter used by the Matrix server if no filter is provided in the request
+func DefaultFilter() Filter {
+	return Filter{
+		AccountData: DefaultFilterPart(),
+		EventFields: nil,
+		EventFormat: "client",
+		Presence:    DefaultFilterPart(),
+		Room: RoomFilter{
+			AccountData:  DefaultFilterPart(),
+			Ephemeral:    DefaultFilterPart(),
+			IncludeLeave: false,
+			NotRooms:     nil,
+			Rooms:        nil,
+			State:        DefaultFilterPart(),
+			Timeline:     DefaultFilterPart(),
+		},
+	}
+}
+
+// DefaultFilterPart returns the default filter part used by the Matrix server if no filter is provided in the request
+func DefaultFilterPart() FilterPart {
+	return FilterPart{
+		NotRooms:   nil,
+		Rooms:      nil,
+		Limit:      20,
+		NotSenders: nil,
+		NotTypes:   nil,
+		Senders:    nil,
+		Types:      nil,
+	}
 }
diff --git a/vendor/src/github.com/matrix-org/gomatrix/responses.go b/vendor/src/github.com/matrix-org/gomatrix/responses.go
index fe0eeb32a..7a3a4ce39 100644
--- a/vendor/src/github.com/matrix-org/gomatrix/responses.go
+++ b/vendor/src/github.com/matrix-org/gomatrix/responses.go
@@ -84,7 +84,7 @@ type RespUserInteractive struct {
 		Stages []string `json:"stages"`
 	} `json:"flows"`
 	Params    map[string]interface{} `json:"params"`
-	Session   string                 `json:"string"`
+	Session   string                 `json:"session"`
 	Completed []string               `json:"completed"`
 	ErrCode   string                 `json:"errcode"`
 	Error     string                 `json:"error"`
@@ -168,6 +168,7 @@ type RespSync struct {
 	} `json:"rooms"`
 }
 
+// RespTurnServer is the JSON response from a Turn Server
 type RespTurnServer struct {
 	Username string   `json:"username"`
 	Password string   `json:"password"`
diff --git a/vendor/src/github.com/matrix-org/gomatrix/tags.go b/vendor/src/github.com/matrix-org/gomatrix/tags.go
new file mode 100644
index 000000000..956fb11e9
--- /dev/null
+++ b/vendor/src/github.com/matrix-org/gomatrix/tags.go
@@ -0,0 +1,26 @@
+// Copyright 2019 Sumukha PK
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package gomatrix
+
+// TagContent contains the data for an m.tag message type
+// https://matrix.org/docs/spec/client_server/r0.4.0.html#m-tag
+type TagContent struct {
+	Tags map[string]TagProperties `json:"tags"`
+}
+
+// TagProperties contains the properties of a Tag
+type TagProperties struct {
+	Order float32 `json:"order,omitempty"` // Empty values must be neglected
+}