diff --git a/src/main.go b/src/main.go
index 491b7a3..13c770a 100644
--- a/src/main.go
+++ b/src/main.go
@@ -11,6 +11,8 @@ import (
 
 	"github.com/gin-contrib/cors"
 	"github.com/gin-gonic/gin"
+
+	"net/http"
 )
 
 func main() {
@@ -44,6 +46,22 @@ func main() {
 	router := gin.Default()
 	corsConfig := cors.DefaultConfig()
 	corsConfig.AllowOrigins = []string{"https://sheets.julian-mutter.de"}
+	corsConfig.AllowHeaders = []string{
+		"Origin",
+		"X-Requested-With",
+		"Content-Type",
+		"Accept",
+		"Authorization",
+	}
+	corsConfig.AllowMethods = []string{
+		http.MethodHead,
+		http.MethodGet,
+		http.MethodPost,
+		http.MethodPut,
+		http.MethodPatch,
+		http.MethodDelete,
+	}
+	corsConfig.AllowCredentials = true
 
 	router.Use(cors.New(corsConfig))
 	routes.SetupRoutes(router)