diff --git a/db/db.go b/db/db.go
index 0481fb5..f2fc21b 100644
--- a/db/db.go
+++ b/db/db.go
@@ -9,7 +9,6 @@ import (
 	"strconv"
 
 	"github.com/pkg/errors"
-	bolt "go.etcd.io/bbolt"
 	"gorm.io/driver/sqlite"
 	"gorm.io/gorm"
 	"gorm.io/gorm/clause"
@@ -137,31 +136,3 @@ func (db *Db) getUser(userId int) (user *User, err error) {
 
 	return
 }
-
-func getMapper(tx *bolt.Tx, userId int) (mapper *bolt.Bucket) {
-	mappers := tx.Bucket(MAPPERS)
-	if mappers == nil {
-		return nil
-	}
-
-	mapper = mappers.Bucket([]byte(strconv.Itoa(userId)))
-	if mapper == nil {
-		return nil
-	}
-
-	return
-}
-
-func getMapperMut(tx *bolt.Tx, userId int) (mapper *bolt.Bucket, err error) {
-	mappers, err := tx.CreateBucketIfNotExists(MAPPERS)
-	if err != nil {
-		return
-	}
-
-	mapper, err = mappers.CreateBucketIfNotExists([]byte(strconv.Itoa(userId)))
-	if err != nil {
-		return
-	}
-
-	return
-}
diff --git a/go.mod b/go.mod
index 017c385..6a4a391 100644
--- a/go.mod
+++ b/go.mod
@@ -15,7 +15,6 @@ require (
 	github.com/gorilla/sessions v1.2.1 // indirect
 	github.com/kofalt/go-memoize v0.0.0-20200917044458-9b55a8d73e1c
 	github.com/pkg/errors v0.8.1
-	go.etcd.io/bbolt v1.3.5
 	golang.org/x/sync v0.0.0-20201008141435-b3e1573b7520
 	gorm.io/driver/sqlite v1.1.4
 	gorm.io/gorm v1.21.12
diff --git a/go.sum b/go.sum
index fb0c528..cad058e 100644
--- a/go.sum
+++ b/go.sum
@@ -151,8 +151,6 @@ github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyC
 github.com/valyala/fasttemplate v1.0.1/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
 github.com/xanzy/ssh-agent v0.2.1 h1:TCbipTQL2JiiCprBWx9frJ2eJlCYT00NmctrHxVAr70=
 github.com/xanzy/ssh-agent v0.2.1/go.mod h1:mLlQY/MoOhWBj+gOGMQkOeiEvkx+8pJSI+0Bx9h2kr4=
-go.etcd.io/bbolt v1.3.5 h1:XAzx9gjCb0Rxj7EoqcClPD1d5ZBxZJk0jbuoPHenBt0=
-go.etcd.io/bbolt v1.3.5/go.mod h1:G5EMThwa9y8QZGBClrRx5EY+Yw9kAhnjy3bSjsnlVTQ=
 golang.org/x/crypto v0.0.0-20181030102418-4d3f4d9ffa16/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190219172222-a4c6cb3142f2/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
@@ -177,7 +175,6 @@ golang.org/x/sys v0.0.0-20190602015325-4c4f7f33c9ed/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190609082536-301114b31cce/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527 h1:uYVVQ9WP/Ds2ROhcaGPeIdVq0RIXVLwsHlnvJ+cT1So=
 golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=