diff --git a/src/actions/utilActions.js b/src/actions/utilActions.js
index 40f51ba7..ab04db59 100644
--- a/src/actions/utilActions.js
+++ b/src/actions/utilActions.js
@@ -113,20 +113,6 @@ export function fetchLocationSunburst() {
   };
 }
 
-export function fetchTimezoneList(dispatch) {
-  dispatch({ type: "FETCH_TIMEZONE_LIST" });
-  Server.get(`timezones/`)
-    .then(response => {
-      dispatch({
-        type: "FETCH_TIMEZONE_LIST_FULFILLED",
-        payload: response.data,
-      });
-    })
-    .catch(err => {
-      dispatch({ type: "FETCH_TIMEZONE_LIST_REJECTED", payload: err });
-    });
-}
-
 export function fetchCountStats() {
   return function cb(dispatch) {
     dispatch({ type: "FETCH_COUNT_STATS" });
diff --git a/src/api_client/util.ts b/src/api_client/util.ts
new file mode 100644
index 00000000..38d3b80b
--- /dev/null
+++ b/src/api_client/util.ts
@@ -0,0 +1,37 @@
+import { z } from "zod";
+
+import { api } from "./api";
+
+enum Endpoints {
+  fetchTimezones = "fetchTimezones",
+}
+
+const TimezonesSchema = z.string().array();
+type Timezones = z.infer<typeof TimezonesSchema>;
+
+const utilApi = api
+  .injectEndpoints({
+    endpoints: builder => ({
+      [Endpoints.fetchTimezones]: builder.query<Timezones, void>({
+        query: () => "timezones/",
+        transformResponse: (response: string) => {
+          try {
+            const timezones = JSON.parse(response);
+            return TimezonesSchema.parse(timezones);
+          } catch (e) {
+            return [];
+          }
+        },
+      }),
+    }),
+  })
+  .enhanceEndpoints<"Timezones">({
+    addTagTypes: ["Timezones"],
+    endpoints: {
+      [Endpoints.fetchTimezones]: {
+        providesTags: ["Timezones"],
+      },
+    },
+  });
+
+export const { useFetchTimezonesQuery } = utilApi;
diff --git a/src/layouts/settings/Settings.tsx b/src/layouts/settings/Settings.tsx
index 60a6038d..0bcfb2a1 100644
--- a/src/layouts/settings/Settings.tsx
+++ b/src/layouts/settings/Settings.tsx
@@ -18,20 +18,20 @@ import { IconSettings as SettingIcon } from "@tabler/icons-react";
 import React, { useEffect, useState } from "react";
 import { Trans, useTranslation } from "react-i18next";
 
-import { fetchCountStats, fetchTimezoneList, updateUser } from "../../actions/utilActions";
+import { fetchCountStats, updateUser } from "../../actions/utilActions";
 import { api } from "../../api_client/api";
+import { useFetchTimezonesQuery } from "../../api_client/util";
 import { ConfigDateTime } from "../../components/settings/ConfigDateTime";
 import { useAppDispatch, useAppSelector } from "../../store/store";
 
 export function Settings() {
   const [isOpenUpdateDialog, setIsOpenUpdateDialog] = useState(false);
   const userSelfDetailsRedux = useAppSelector(state => state.user.userSelfDetails);
-  const timezoneListRedux = useAppSelector(state => state.util.timezoneList);
   const [userSelfDetails, setUserSelfDetails] = useState(userSelfDetailsRedux);
-  const [timezoneList, setTimezoneList] = useState(timezoneListRedux);
   const dispatch = useAppDispatch();
   const auth = useAppSelector(state => state.auth);
   const { t } = useTranslation();
+  const { data: timezoneList = [] } = useFetchTimezonesQuery();
 
   // open update dialog, when user was edited
   useEffect(() => {
@@ -45,13 +45,8 @@ export function Settings() {
   useEffect(() => {
     dispatch(fetchCountStats());
     dispatch(api.endpoints.fetchUserSelfDetails.initiate(auth.access.user_id)).refetch();
-    fetchTimezoneList(dispatch);
   }, [auth.access.user_id, dispatch]);
 
-  useEffect(() => {
-    setTimezoneList(timezoneListRedux);
-  }, [timezoneListRedux]);
-
   useEffect(() => {
     setUserSelfDetails(userSelfDetailsRedux);
   }, [userSelfDetailsRedux]);
@@ -140,7 +135,7 @@ export function Settings() {
               searchable
               title={t("timezoneexplain")}
               onChange={value => {
-                setUserSelfDetails({ ...userSelfDetails, default_timezone: value || "UTC" });
+                setUserSelfDetails({ ...userSelfDetails, default_timezone: value ?? "UTC" });
               }}
               data={timezoneList}
             />
diff --git a/src/reducers/utilReducer.js b/src/reducers/utilReducer.js
index d2a28200..058747ce 100644
--- a/src/reducers/utilReducer.js
+++ b/src/reducers/utilReducer.js
@@ -67,8 +67,6 @@ const initialState = {
   fetchedJobList: false,
 
   error: null,
-  fetchingTimezones: false,
-  timezoneList: [],
 };
 
 export default function reducer(state = initialState, action = DEFAULT_ACTION) {
@@ -266,19 +264,6 @@ export default function reducer(state = initialState, action = DEFAULT_ACTION) {
       };
     }
 
-    case "FETCH_TIMEZONE_LIST": {
-      return { ...state, fetchingTimezones: true };
-    }
-    case "FETCH_TIMEZONE_LIST_REJECTED": {
-      return { ...state, fetchingTimezones: false, error: action.payload };
-    }
-    case "FETCH_TIMEZONE_LIST_FULFILLED": {
-      return {
-        ...state,
-        fetchingTimezones: false,
-        timezoneList: JSON.parse(action.payload),
-      };
-    }
     case "FETCH_COUNT_STATS": {
       return { ...state, fetchingCountStats: true };
     }