diff --git a/database/message.go b/database/message.go
index c8f6f9e..5513df3 100644
--- a/database/message.go
+++ b/database/message.go
@@ -35,11 +35,11 @@ type MessageQuery struct {
 
 func (mq *MessageQuery) CreateTable() error {
 	_, err := mq.db.Exec(`CREATE TABLE IF NOT EXISTS message (
-		chat_jid      VARCHAR(25),
-		chat_receiver VARCHAR(25),
+		chat_jid      VARCHAR(255),
+		chat_receiver VARCHAR(255),
 		jid           VARCHAR(255),
 		mxid          VARCHAR(255) NOT NULL UNIQUE,
-		sender        VARCHAR(25)  NOT NULL,
+		sender        VARCHAR(255)  NOT NULL,
 		content       bytea         NOT NULL,
 
 		PRIMARY KEY (chat_jid, chat_receiver, jid),
@@ -56,7 +56,7 @@ func (mq *MessageQuery) New() *Message {
 }
 
 func (mq *MessageQuery) GetAll(chat PortalKey) (messages []*Message) {
-	rows, err := mq.db.Query("SELECT * FROM message WHERE chat_jid=? AND chat_receiver=?", chat.JID, chat.Receiver)
+	rows, err := mq.db.Query("SELECT * FROM message WHERE chat_jid=$1 AND chat_receiver=$2", chat.JID, chat.Receiver)
 	if err != nil || rows == nil {
 		return nil
 	}
@@ -68,11 +68,11 @@ func (mq *MessageQuery) GetAll(chat PortalKey) (messages []*Message) {
 }
 
 func (mq *MessageQuery) GetByJID(chat PortalKey, jid types.WhatsAppMessageID) *Message {
-	return mq.get("SELECT * FROM message WHERE chat_jid=? AND chat_receiver=? AND jid=?", chat.JID, chat.Receiver, jid)
+	return mq.get("SELECT * FROM message WHERE chat_jid=$1 AND chat_receiver=$2 AND jid=$3", chat.JID, chat.Receiver, jid)
 }
 
 func (mq *MessageQuery) GetByMXID(mxid types.MatrixEventID) *Message {
-	return mq.get("SELECT * FROM message WHERE mxid=?", mxid)
+	return mq.get("SELECT * FROM message WHERE mxid=$1", mxid)
 }
 
 func (mq *MessageQuery) get(query string, args ...interface{}) *Message {
@@ -130,7 +130,7 @@ func (msg *Message) encodeBinaryContent() []byte {
 }
 
 func (msg *Message) Insert() {
-	_, err := msg.db.Exec("INSERT INTO message VALUES (?, ?, ?, ?, ?, ?)", msg.Chat.JID, msg.Chat.Receiver, msg.JID, msg.MXID, msg.Sender, msg.encodeBinaryContent())
+	_, err := msg.db.Exec("INSERT INTO message VALUES ($1, $2, $3, $4, $5, $6)", msg.Chat.JID, msg.Chat.Receiver, msg.JID, msg.MXID, msg.Sender, msg.encodeBinaryContent())
 	if err != nil {
 		msg.log.Warnfln("Failed to insert %s@%s: %v", msg.Chat, msg.JID, err)
 	}
diff --git a/database/portal.go b/database/portal.go
index ffb4318..8bfffdb 100644
--- a/database/portal.go
+++ b/database/portal.go
@@ -61,16 +61,15 @@ type PortalQuery struct {
 
 func (pq *PortalQuery) CreateTable() error {
 	_, err := pq.db.Exec(`CREATE TABLE IF NOT EXISTS portal (
-		jid      VARCHAR(25),
-		receiver VARCHAR(25),
+		jid      VARCHAR(255),
+		receiver VARCHAR(255),
 		mxid     VARCHAR(255) UNIQUE,
 
 		name   VARCHAR(255) NOT NULL,
 		topic  VARCHAR(255) NOT NULL,
 		avatar VARCHAR(255) NOT NULL,
 
-		PRIMARY KEY (jid, receiver),
-		FOREIGN KEY (receiver) REFERENCES whatsapp_user(mxid)
+		PRIMARY KEY (jid, receiver)
 	)`)
 	return err
 }
@@ -95,11 +94,11 @@ func (pq *PortalQuery) GetAll() (portals []*Portal) {
 }
 
 func (pq *PortalQuery) GetByJID(key PortalKey) *Portal {
-	return pq.get("SELECT * FROM portal WHERE jid=? AND receiver=?", key.JID, key.Receiver)
+	return pq.get("SELECT * FROM portal WHERE jid=$1 AND receiver=$2", key.JID, key.Receiver)
 }
 
 func (pq *PortalQuery) GetByMXID(mxid types.MatrixRoomID) *Portal {
-	return pq.get("SELECT * FROM portal WHERE mxid=?", mxid)
+	return pq.get("SELECT * FROM portal WHERE mxid=$1", mxid)
 }
 
 func (pq *PortalQuery) get(query string, args ...interface{}) *Portal {
@@ -143,7 +142,7 @@ func (portal *Portal) mxidPtr() *string {
 }
 
 func (portal *Portal) Insert() {
-	_, err := portal.db.Exec("INSERT INTO portal VALUES (?, ?, ?, ?, ?, ?)",
+	_, err := portal.db.Exec("INSERT INTO portal VALUES ($1, $2, $3, $4, $5, $6)",
 		portal.Key.JID, portal.Key.Receiver, portal.mxidPtr(), portal.Name, portal.Topic, portal.Avatar)
 	if err != nil {
 		portal.log.Warnfln("Failed to insert %s: %v", portal.Key, err)
@@ -155,7 +154,7 @@ func (portal *Portal) Update() {
 	if len(portal.MXID) > 0 {
 		mxid = &portal.MXID
 	}
-	_, err := portal.db.Exec("UPDATE portal SET mxid=?, name=?, topic=?, avatar=? WHERE jid=? AND receiver=?",
+	_, err := portal.db.Exec("UPDATE portal SET mxid=$1, name=$2, topic=$3, avatar=$4 WHERE jid=$5 AND receiver=$6",
 		mxid, portal.Name, portal.Topic, portal.Avatar, portal.Key.JID, portal.Key.Receiver)
 	if err != nil {
 		portal.log.Warnfln("Failed to update %s: %v", portal.Key, err)
diff --git a/database/puppet.go b/database/puppet.go
index bde6116..b6637f8 100644
--- a/database/puppet.go
+++ b/database/puppet.go
@@ -31,7 +31,7 @@ type PuppetQuery struct {
 
 func (pq *PuppetQuery) CreateTable() error {
 	_, err := pq.db.Exec(`CREATE TABLE IF NOT EXISTS puppet (
-		jid          VARCHAR(25) PRIMARY KEY,
+		jid          VARCHAR(255) PRIMARY KEY,
 		avatar       VARCHAR(255),
 		displayname  VARCHAR(255),
 		name_quality SMALLINT
@@ -59,7 +59,7 @@ func (pq *PuppetQuery) GetAll() (puppets []*Puppet) {
 }
 
 func (pq *PuppetQuery) Get(jid types.WhatsAppID) *Puppet {
-	row := pq.db.QueryRow("SELECT * FROM puppet WHERE jid=?", jid)
+	row := pq.db.QueryRow("SELECT * FROM puppet WHERE jid=$1", jid)
 	if row == nil {
 		return nil
 	}
@@ -93,7 +93,7 @@ func (puppet *Puppet) Scan(row Scannable) *Puppet {
 }
 
 func (puppet *Puppet) Insert() {
-	_, err := puppet.db.Exec("INSERT INTO puppet VALUES (?, ?, ?, ?)",
+	_, err := puppet.db.Exec("INSERT INTO puppet VALUES ($1, $2, $3, $4)",
 		puppet.JID, puppet.Avatar, puppet.Displayname, puppet.NameQuality)
 	if err != nil {
 		puppet.log.Warnfln("Failed to insert %s: %v", puppet.JID, err)
@@ -101,7 +101,7 @@ func (puppet *Puppet) Insert() {
 }
 
 func (puppet *Puppet) Update() {
-	_, err := puppet.db.Exec("UPDATE puppet SET displayname=?, name_quality=?, avatar=? WHERE jid=?",
+	_, err := puppet.db.Exec("UPDATE puppet SET displayname=$1, name_quality=$2, avatar=$3 WHERE jid=$4",
 		puppet.Displayname, puppet.NameQuality, puppet.Avatar, puppet.JID)
 	if err != nil {
 		puppet.log.Warnfln("Failed to update %s->%s: %v", puppet.JID, err)
diff --git a/database/user.go b/database/user.go
index 2f09555..f871b67 100644
--- a/database/user.go
+++ b/database/user.go
@@ -36,7 +36,7 @@ type UserQuery struct {
 func (uq *UserQuery) CreateTable() error {
 	_, err := uq.db.Exec(`CREATE TABLE IF NOT EXISTS whatsapp_user (
 		mxid VARCHAR(255) PRIMARY KEY,
-		jid  VARCHAR(25)  UNIQUE,
+		jid  VARCHAR(255)  UNIQUE,
 
 		management_room VARCHAR(255),
 
@@ -69,7 +69,7 @@ func (uq *UserQuery) GetAll() (users []*User) {
 }
 
 func (uq *UserQuery) GetByMXID(userID types.MatrixUserID) *User {
-	row := uq.db.QueryRow("SELECT * FROM whatsapp_user WHERE mxid=?", userID)
+	row := uq.db.QueryRow("SELECT * FROM whatsapp_user WHERE mxid=$1", userID)
 	if row == nil {
 		return nil
 	}
@@ -77,7 +77,7 @@ func (uq *UserQuery) GetByMXID(userID types.MatrixUserID) *User {
 }
 
 func (uq *UserQuery) GetByJID(userID types.WhatsAppID) *User {
-	row := uq.db.QueryRow("SELECT * FROM whatsapp_user WHERE jid=?", stripSuffix(userID))
+	row := uq.db.QueryRow("SELECT * FROM whatsapp_user WHERE jid=$1", stripSuffix(userID))
 	if row == nil {
 		return nil
 	}
@@ -150,7 +150,7 @@ func (user *User) sessionUnptr() (sess whatsapp.Session) {
 
 func (user *User) Insert() {
 	sess := user.sessionUnptr()
-	_, err := user.db.Exec("INSERT INTO whatsapp_user VALUES (?, ?, ?, ?, ?, ?, ?, ?)", user.MXID, user.jidPtr(),
+	_, err := user.db.Exec("INSERT INTO whatsapp_user VALUES ($1, $2, $3, $4, $5, $6, $7, $8)", user.MXID, user.jidPtr(),
 		user.ManagementRoom,
 		sess.ClientId, sess.ClientToken, sess.ServerToken, sess.EncKey, sess.MacKey)
 	if err != nil {
@@ -160,7 +160,7 @@ func (user *User) Insert() {
 
 func (user *User) Update() {
 	sess := user.sessionUnptr()
-	_, err := user.db.Exec("UPDATE whatsapp_user SET jid=?, management_room=?, client_id=?, client_token=?, server_token=?, enc_key=?, mac_key=? WHERE mxid=?",
+	_, err := user.db.Exec("UPDATE whatsapp_user SET jid=$1, management_room=$2, client_id=$3, client_token=$4, server_token=$5, enc_key=$6, mac_key=$7 WHERE mxid=$8",
 		user.jidPtr(), user.ManagementRoom,
 		sess.ClientId, sess.ClientToken, sess.ServerToken, sess.EncKey, sess.MacKey,
 		user.MXID)
diff --git a/go.mod b/go.mod
index 7c3e154..764f745 100644
--- a/go.mod
+++ b/go.mod
@@ -2,7 +2,6 @@ module maunium.net/go/mautrix-whatsapp
 
 require (
 	github.com/Baozisoftware/qrcode-terminal-go v0.0.0-20170407111555-c0650d8dff0f // indirect
-	github.com/Rhymen/go-whatsapp v0.0.0-20190208090600-c1173899de99
 	github.com/gorilla/mux v1.7.0 // indirect
 	github.com/mattn/go-colorable v0.1.1 // indirect
 	github.com/mattn/go-sqlite3 v1.10.0
diff --git a/main.go b/main.go
index 22ee7a9..4615983 100644
--- a/main.go
+++ b/main.go
@@ -185,6 +185,7 @@ func (bridge *Bridge) UpdateBotProfile() {
 }
 
 func (bridge *Bridge) StartUsers() {
+	bridge.Log.Debugln("Starting users")
 	for _, user := range bridge.GetAllUsers() {
 		go user.Connect(false)
 	}