diff --git a/models/device.go b/models/device.go
index 001539c..fa48bab 100644
--- a/models/device.go
+++ b/models/device.go
@@ -7,10 +7,10 @@ import (
 )
 
 type Device struct {
-	VaultId    string `gorm:"type:varchar(255);not null;uniqueIndex:idx_vault_party" json:"vault_id" binding:"required"`
-	PartyName  string `gorm:"type:varchar(255);not null;uniqueIndex:idx_vault_party" json:"party_name" binding:"required"`
-	Token      string `gorm:"type:varchar(255);not null;uniqueIndex:idx_vault_party" json:"token" binding:"required"`
-	DeviceType string `gorm:"type:varchar(255);not null" json:"device_type" binding:"required"` // apple, android, or web
+	VaultId    string `gorm:"type:varchar(64);not null;uniqueIndex:idx_vault_party" json:"vault_id" binding:"required"`
+	PartyName  string `gorm:"type:varchar(128);not null;uniqueIndex:idx_vault_party" json:"party_name" binding:"required"`
+	Token      string `gorm:"type:varchar(512);not null;uniqueIndex:idx_vault_party" json:"token" binding:"required"`
+	DeviceType string `gorm:"type:varchar(64);not null" json:"device_type" binding:"required"` // apple, android, or web
 }
 
 type DeviceDBModel struct {