diff --git a/ui/src/routes/WorkingHours.svelte b/ui/src/routes/WorkingHours.svelte
index f9a726e..7ce8567 100644
--- a/ui/src/routes/WorkingHours.svelte
+++ b/ui/src/routes/WorkingHours.svelte
@@ -52,19 +52,17 @@
                     console.log(err);
                 });
         },
-        'add': record => {
+        'add': async record => {
             console.log(record);
             // noinspection JSUnresolvedVariable
-            fetch(env.API_URL + '/working-hours', {
+            await fetch(env.API_URL + '/working-hours', {
                 method: 'POST',
-                mode: 'no-cors',
+                mode: 'cors',
                 cache: 'no-cache',
-                credentials: 'same-origin',
+                credentials: 'omit',
                 headers: {
                     'Content-Type': 'application/json'
                 },
-                redirect: 'follow',
-                referrerPolicy: 'no-referrer',
                 body: JSON.stringify(record)
             })
                 .then(res => {
@@ -79,19 +77,17 @@
                     console.log(err);
                 });
         },
-        'update': (date, record) => {
+        'update': async (date, record) => {
             console.log(record);
             // noinspection JSUnresolvedVariable
-            fetch(env.API_URL + '/working-hours/' + date, {
+            await fetch(env.API_URL + '/working-hours/' + date, {
                 method: 'PUT',
-                mode: 'no-cors',
+                mode: 'cors',
                 cache: 'no-cache',
-                credentials: 'same-origin',
+                credentials: 'omit',
                 headers: {
                     'Content-Type': 'application/json'
                 },
-                redirect: 'follow',
-                referrerPolicy: 'no-referrer',
                 body: JSON.stringify(record)
             })
                 .then(res => {