diff --git a/backend/internal/api/handlers/system.go b/backend/internal/api/handlers/system.go
index 13dd9a1..644418b 100644
--- a/backend/internal/api/handlers/system.go
+++ b/backend/internal/api/handlers/system.go
@@ -1,6 +1,7 @@
 package handlers
 
 import (
+	"fmt"
 	"net/http"
 	"strconv"
 
@@ -77,12 +78,26 @@ func (h *SystemHandler) UpdateSettings(c *gin.Context) {
 	}
 
 	for key, value := range req.Settings {
+		var strValue string
+		switch v := value.(type) {
+		case string:
+			strValue = v
+		case float64:
+			strValue = fmt.Sprintf("%v", v)
+		case int:
+			strValue = fmt.Sprintf("%d", v)
+		case bool:
+			strValue = fmt.Sprintf("%v", v)
+		default:
+			strValue = fmt.Sprintf("%v", v)
+		}
+
 		var setting models.SystemSetting
 		result := utils.DB.Where("`key` = ?", key).First(&setting)
 		if result.Error != nil {
-			utils.DB.Create(&models.SystemSetting{Key: key, Value: value})
+			utils.DB.Create(&models.SystemSetting{Key: key, Value: strValue})
 		} else {
-			utils.DB.Model(&setting).Update("value", value)
+			utils.DB.Model(&setting).Update("value", strValue)
 		}
 	}
 
diff --git a/backend/internal/schemas/system.go b/backend/internal/schemas/system.go
index 8bef1d4..7821834 100644
--- a/backend/internal/schemas/system.go
+++ b/backend/internal/schemas/system.go
@@ -1,7 +1,7 @@
 package schemas
 
 type UpdateSettingsRequest struct {
-	Settings map[string]string `json:"settings" binding:"required"`
+	Settings map[string]interface{} `json:"settings" binding:"required"`
 }
 
 type AuthorizeSupplierRequest struct {