diff --git a/apps/admin-x-settings/package.json b/apps/admin-x-settings/package.json
index 5a120b35be3..3ec5ce8fe4c 100644
--- a/apps/admin-x-settings/package.json
+++ b/apps/admin-x-settings/package.json
@@ -39,7 +39,7 @@
     "@tryghost/kg-unsplash-selector": "0.2.6",
     "@tryghost/limit-service": "1.2.14",
     "@tryghost/nql": "0.12.7",
-    "@tryghost/timezone-data": "0.4.3",
+    "@tryghost/timezone-data": "0.4.4",
     "react": "18.3.1",
     "react-dom": "18.3.1",
     "validator": "7.2.0"
diff --git a/ghost/admin/mirage/fixtures/timezones.js b/ghost/admin/mirage/fixtures/timezones.js
index 5106a5a0af6..e6a4d5101f1 100644
--- a/ghost/admin/mirage/fixtures/timezones.js
+++ b/ghost/admin/mirage/fixtures/timezones.js
@@ -120,8 +120,8 @@ export default [
         label: '(GMT +1:00) West Central Africa'
     },
     {
-        name: 'Europe/Istanbul',
-        label: '(GMT +2:00) Athens, Beirut, Bucharest, Istanbul'
+        name: 'Europe/Athens',
+        label: '(GMT +2:00) Athens, Beirut, Bucharest'
     },
     {
         name: 'Africa/Cairo',
@@ -151,6 +151,10 @@ export default [
         name: 'Asia/Riyadh',
         label: '(GMT +3:00) Kuwait, Nairobi, Riyadh'
     },
+    {
+        name: 'Europe/Istanbul',
+        label: '(GMT +3:00) Istanbul, Ankara'
+    },
     {
         name: 'Europe/Moscow',
         label: '(GMT +3:00) Moscow, St. Petersburg, Volgograd'
@@ -263,4 +267,4 @@ export default [
         name: 'Pacific/Kwajalein',
         label: '(GMT +12:00) International Date Line West'
     }
-];
+];
\ No newline at end of file
diff --git a/ghost/admin/package.json b/ghost/admin/package.json
index 8cb2f95ec26..857853845dd 100644
--- a/ghost/admin/package.json
+++ b/ghost/admin/package.json
@@ -56,7 +56,7 @@
     "@tryghost/nql": "0.12.7",
     "@tryghost/nql-lang": "0.6.3",
     "@tryghost/string": "0.2.12",
-    "@tryghost/timezone-data": "0.4.3",
+    "@tryghost/timezone-data": "0.4.4",
     "animejs": "3.2.2",
     "autoprefixer": "9.8.6",
     "babel-eslint": "10.1.0",
diff --git a/ghost/admin/tests/integration/services/config-test.js b/ghost/admin/tests/integration/services/config-test.js
index 5cf68c9fed6..b23bf6d7925 100644
--- a/ghost/admin/tests/integration/services/config-test.js
+++ b/ghost/admin/tests/integration/services/config-test.js
@@ -22,7 +22,7 @@ describe('Integration: Service: config-manager', function () {
         const injection = this.owner.lookup('config:main');
         const timezones = injection.availableTimezones;
 
-        expect(timezones.length).to.equal(66);
+        expect(timezones.length).to.equal(67);
         expect(timezones[0].name).to.equal('Pacific/Pago_Pago');
         expect(timezones[0].label).to.equal('(GMT -11:00) Midway Island, Samoa');
         expect(timezones[1].name).to.equal('Pacific/Honolulu');