diff --git a/db/contrib.go b/db/contrib.go
index b591f26..4c3c2f1 100644
--- a/db/contrib.go
+++ b/db/contrib.go
@@ -5,13 +5,13 @@ import (
 )
 
 type Contrib struct {
-	Week      uint64 `json:"week"`
-	OrgID     uint64 `json:"org_id"`
-	RepoID    uint64 `json:"repo_id"`
-	UserID    uint64 `json:"user_id"`
-	Commits   uint64 `json:"commits"`
-	Additions uint64 `json:"additions"`
-	Deletions uint64 `json:"deletions"`
+	Week      int `json:"week"`
+	OrgID     int `json:"org_id"`
+	RepoID    int `json:"repo_id"`
+	UserID    int `json:"user_id"`
+	Commits   int `json:"commits"`
+	Additions int `json:"additions"`
+	Deletions int `json:"deletions"`
 }
 
 func (c *Contrib) Save() {
diff --git a/db/members.go b/db/members.go
index 62476fc..2eb8b06 100644
--- a/db/members.go
+++ b/db/members.go
@@ -7,13 +7,13 @@ import (
 	"time"
 )
 
-func SaveOrgMembers(orgID uint64, members []uint64) {
+func SaveOrgMembers(orgID int, members []int) {
 	defer measure("SaveOrgMembers", time.Now())
 	tx := db.MustBegin()
 
 	var ids = []string{}
 	for _, id := range members {
-		ids = append(ids, strconv.FormatUint(id, 10))
+		ids = append(ids, strconv.Itoa(id))
 	}
 	tx.MustExec(fmt.Sprintf(`
         delete from org_members
@@ -37,13 +37,13 @@ func SaveOrgMembers(orgID uint64, members []uint64) {
 	}
 }
 
-func SaveTeamMembers(orgID, teamID uint64, members []uint64) {
+func SaveTeamMembers(orgID, teamID int, members []int) {
 	defer measure("SaveTeamMembers", time.Now())
 	tx := db.MustBegin()
 
 	var ids = []string{}
 	for _, id := range members {
-		ids = append(ids, strconv.FormatUint(id, 10))
+		ids = append(ids, strconv.Itoa(id))
 	}
 	tx.MustExec(fmt.Sprintf(`
         delete from team_members
@@ -68,13 +68,13 @@ func SaveTeamMembers(orgID, teamID uint64, members []uint64) {
 	}
 }
 
-func SaveTeamRepos(orgID, teamID uint64, repos []uint64) {
+func SaveTeamRepos(orgID, teamID int, repos []int) {
 	defer measure("SaveTeamRepos", time.Now())
 	tx := db.MustBegin()
 
 	var ids = []string{}
 	for _, id := range repos {
-		ids = append(ids, strconv.FormatUint(id, 10))
+		ids = append(ids, strconv.Itoa(id))
 	}
 	tx.MustExec(fmt.Sprintf(`
         delete from team_repos
diff --git a/db/org.go b/db/org.go
index 6d0aa73..c8acf0a 100644
--- a/db/org.go
+++ b/db/org.go
@@ -5,7 +5,7 @@ import (
 )
 
 type Org struct {
-	ID        uint64    `json:"id"`
+	ID        int       `json:"id"`
 	Login     string    `json:"login"`
 	Company   string    `json:"company"`
 	AvatarURL string    `json:"avatar_url" db:"avatar_url"`
diff --git a/db/repo.go b/db/repo.go
index 6f08585..af5b403 100644
--- a/db/repo.go
+++ b/db/repo.go
@@ -5,8 +5,8 @@ import (
 )
 
 type Repo struct {
-	ID          uint64    `json:"id"`
-	OrgID       uint64    `json:"org_id"`
+	ID          int       `json:"id"`
+	OrgID       int       `json:"org_id"`
 	Name        string    `json:"name"`
 	Description string    `json:"description"`
 	IsPrivate   bool      `json:"is_private"`
diff --git a/db/team.go b/db/team.go
index 97ffd3e..95635c7 100644
--- a/db/team.go
+++ b/db/team.go
@@ -5,8 +5,8 @@ import (
 )
 
 type Team struct {
-	ID         uint64    `json:"id"`
-	OrgID      uint64    `json:"org_id" db:"org_id"`
+	ID         int       `json:"id"`
+	OrgID      int       `json:"org_id"`
 	Slug       string    `json:"slug"`
 	Name       string    `json:"name"`
 	Permission string    `json:"permission"`
diff --git a/db/token.go b/db/token.go
index a19c132..acfc4b4 100644
--- a/db/token.go
+++ b/db/token.go
@@ -5,11 +5,11 @@ import (
 )
 
 type Token struct {
-	ID        uint64    `json:"id"`
+	ID        int       `json:"id"`
 	User      string    `json:"user"`
 	Token     string    `json:"token"`
-	Quota     uint64    `json:"quota"`
-	Remaining uint64    `json:"remaining"`
+	Quota     int       `json:"quota"`
+	Remaining int       `json:"remaining"`
 	ResetAt   time.Time `json:"reset_at" db:"reset_at"`
 	CreatedAt time.Time `json:"created_at" db:"created_at"`
 }
diff --git a/db/user.go b/db/user.go
index 245e237..9e18184 100644
--- a/db/user.go
+++ b/db/user.go
@@ -5,7 +5,7 @@ import (
 )
 
 type User struct {
-	ID        uint64    `json:"id"`
+	ID        int       `json:"id"`
 	Login     string    `json:"login"`
 	Name      string    `json:"name"`
 	AvatarURL string    `json:"avatar_url" db:"avatar_url"`
diff --git a/task/sync.go b/task/sync.go
index f054ff5..db80af0 100644
--- a/task/sync.go
+++ b/task/sync.go
@@ -25,7 +25,7 @@ func SyncRepos(token, owner string) {
 				descr = *repo.Description
 			}
 			r := &db.Repo{
-				OrgID:       uint64(*repo.Organization.ID),
+				OrgID:       *repo.Organization.ID,
 				Name:        *repo.Name,
 				Description: descr,
 				IsPrivate:   *repo.Private,
@@ -59,13 +59,13 @@ func SyncContrib(token, owner string, repo *db.Repo) {
 			}
 
 			c := &db.Contrib{
-				Week:      uint64(week.Week.Time.Unix()),
+				Week:      int(week.Week.Time.Unix()),
 				OrgID:     repo.OrgID,
 				RepoID:    repo.ID,
-				UserID:    uint64(*contrib.Author.ID),
-				Commits:   uint64(*week.Commits),
-				Additions: uint64(*week.Additions),
-				Deletions: uint64(*week.Deletions),
+				UserID:    *contrib.Author.ID,
+				Commits:   *week.Commits,
+				Additions: *week.Additions,
+				Deletions: *week.Deletions,
 			}
 			c.Save()
 		}
@@ -95,7 +95,7 @@ func SyncUserOrgs(token string) (err error) {
 				avatarURL = *org.AvatarURL
 			}
 			o := &db.Org{
-				ID:        uint64(*org.ID),
+				ID:        *org.ID,
 				Login:     *org.Login,
 				Company:   company,
 				AvatarURL: avatarURL,
@@ -128,8 +128,8 @@ func SyncOrgTeams(token string, org *db.Org) (err error) {
 
 		for _, team := range teams {
 			t := &db.Team{
-				ID:         uint64(*team.ID),
 				Name:       *team.Name,
+				ID:         *team.ID,
 				Slug:       *team.Slug,
 				Permission: *team.Permission,
 				OrgID:      org.ID,
@@ -151,7 +151,7 @@ func SyncOrgMembers(token string, org *db.Org) (err error) {
 	client := newGithubClient(token)
 	opt := &github.ListMembersOptions{ListOptions: github.ListOptions{PerPage: 100}}
 
-	var ids = []uint64{}
+	var ids = []int{}
 	for {
 		opt.Page++
 		var users []github.User
@@ -162,7 +162,7 @@ func SyncOrgMembers(token string, org *db.Org) (err error) {
 		saveResponseMeta(token, resp)
 
 		for _, user := range users {
-			ids = append(ids, uint64(*user.ID))
+			ids = append(ids, *user.ID)
 			go SyncUserInfo(token, *user.Login)
 		}
 		if opt.Page >= resp.LastPage {
@@ -179,7 +179,7 @@ func SyncTeamMembers(token string, team *db.Team) (err error) {
 	client := newGithubClient(token)
 	opt := &github.ListOptions{PerPage: 100}
 
-	var ids = []uint64{}
+	var ids = []int{}
 	for {
 		opt.Page++
 		var users []github.User
@@ -190,7 +190,7 @@ func SyncTeamMembers(token string, team *db.Team) (err error) {
 		saveResponseMeta(token, resp)
 
 		for _, user := range users {
-			ids = append(ids, uint64(*user.ID))
+			ids = append(ids, *user.ID)
 		}
 		if opt.Page >= resp.LastPage {
 			break
@@ -206,7 +206,7 @@ func SyncTeamRepos(token string, team *db.Team) (err error) {
 	client := newGithubClient(token)
 	opt := &github.ListOptions{PerPage: 100}
 
-	var ids = []uint64{}
+	var ids = []int{}
 	for {
 		opt.Page++
 		var repos []github.Repository
@@ -217,7 +217,7 @@ func SyncTeamRepos(token string, team *db.Team) (err error) {
 		saveResponseMeta(token, resp)
 
 		for _, repo := range repos {
-			ids = append(ids, uint64(*repo.ID))
+			ids = append(ids, *repo.ID)
 		}
 		if opt.Page >= resp.LastPage {
 			break
diff --git a/task/task.go b/task/task.go
index c4a2919..d0154df 100644
--- a/task/task.go
+++ b/task/task.go
@@ -22,8 +22,8 @@ func saveResponseMeta(token string, res *github.Response) {
 	}
 	tok := &db.Token{
 		Token:     token,
-		Quota:     uint64(res.Limit),
-		Remaining: uint64(res.Remaining),
+		Quota:     res.Limit,
+		Remaining: res.Remaining,
 		ResetAt:   res.Reset.Time,
 	}
 	tok.Save()
diff --git a/task/user.go b/task/user.go
index 390b196..dd3f96c 100644
--- a/task/user.go
+++ b/task/user.go
@@ -31,7 +31,7 @@ func FetchUserInfo(token, login string) (u *db.User, err error) {
 	u = &db.User{
 		Login:     *user.Login,
 		Name:      name,
-		ID:        uint64(*user.ID),
+		ID:        *user.ID,
 		AvatarURL: avatarURL,
 	}