diff --git a/packages/integrations/package.json b/packages/integrations/package.json
index eedb34ecf..e5f2b93e4 100644
--- a/packages/integrations/package.json
+++ b/packages/integrations/package.json
@@ -43,7 +43,7 @@
     "@octokit/auth-app": "^8.2.0",
     "ical.js": "^2.2.1",
     "maria2": "^0.4.1",
-    "node-ical": "^0.22.1",
+    "node-ical": "^0.23.1",
     "octokit": "^5.0.5",
     "proxmox-api": "1.1.1",
     "tsdav": "^2.1.8",
diff --git a/packages/integrations/src/nextcloud/nextcloud.integration.ts b/packages/integrations/src/nextcloud/nextcloud.integration.ts
index 531191cf6..5c8aabc90 100644
--- a/packages/integrations/src/nextcloud/nextcloud.integration.ts
+++ b/packages/integrations/src/nextcloud/nextcloud.integration.ts
@@ -87,10 +87,7 @@ export class NextcloudIntegration extends Integration implements ICalendarIntegr
         const durationMs = veventObject.end.getTime() - veventObject.start.getTime();
 
         return startDates.map((startDate) => {
-          const timezoneOffsetMinutes = veventObject.rrule?.origOptions.tzid
-            ? dayjs(startDate).tz(veventObject.rrule.origOptions.tzid).utcOffset()
-            : 0;
-          const utcStartDate = new Date(startDate.getTime() - timezoneOffsetMinutes * 60 * 1000);
+          const utcStartDate = dayjs(startDate).tz("UTC").toDate();
           const endDate = new Date(utcStartDate.getTime() + durationMs);
           const dateInMillis = utcStartDate.valueOf();
 
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 0fc8bca3d..cd8ecb847 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -1481,8 +1481,8 @@ importers:
         specifier: ^0.4.1
         version: 0.4.1
       node-ical:
-        specifier: ^0.22.1
-        version: 0.22.1
+        specifier: ^0.23.1
+        version: 0.23.1
       octokit:
         specifier: ^5.0.5
         version: 5.0.5
@@ -3704,6 +3704,10 @@ packages:
   '@js-sdsl/ordered-map@4.4.2':
     resolution: {integrity: sha512-iUKgm52T8HOE/makSxjqoWhe95ZJA1/G1sYsGev2JDKUSS14KAgg1LHb+Ba+IPow0xflbnSkOsZcO08C7w1gYw==}
 
+  '@js-temporal/polyfill@0.5.1':
+    resolution: {integrity: sha512-hloP58zRVCRSpgDxmqCWJNlizAlUgJFqG2ypq79DCvyv9tHjRYMDOcPFjzfl/A1/YxDvRCZz8wvZvmapQnKwFQ==}
+    engines: {node: '>=12'}
+
   '@jsep-plugin/assignment@1.3.0':
     resolution: {integrity: sha512-VVgV+CXrhbMI3aSusQyclHkenWSAm95WaiKrMxRFam3JSUiIaQjoMIw2sEs/OX4XifnqeQUN4DYbJjlA8EfktQ==}
     engines: {node: '>= 10.16.0'}
@@ -7866,6 +7870,9 @@ packages:
     resolution: {integrity: sha512-qQKT4zQxXl8lLwBtHMWwaTcGfFOZviOJet3Oy/xmGk2gZH677CJM9EvtfdSkgWcATZhj/55JZ0rmy3myCT5lsA==}
     hasBin: true
 
+  jsbi@4.3.2:
+    resolution: {integrity: sha512-9fqMSQbhJykSeii05nxKl4m6Eqn2P6rOlYiS+C5Dr/HPIU/7yZxu5qzbs40tgaFORiw2Amd0mirjxatXYMkIew==}
+
   jsbn@1.1.0:
     resolution: {integrity: sha512-4bYVV3aAMtDTTu4+xsDYa6sy9GyJ69/amsu9sYF2zqjiEoZA5xJi3BrfX3uY+/IekIu7MwdObdbDWpoZdBv3/A==}
 
@@ -8519,8 +8526,8 @@ packages:
     resolution: {integrity: sha512-LA4ZjwlnUblHVgq0oBF3Jl/6h/Nvs5fzBLwdEF4nuxnFdsfajde4WfxtJr3CaiH+F6ewcIB/q4jQ4UzPyid+CQ==}
     hasBin: true
 
-  node-ical@0.22.1:
-    resolution: {integrity: sha512-rMdc5hhJT3ZPtZIWfEXcetRrPl2xeHGpMJX8lq4VwyLKfOzGr+rXVtx0lD8lSf27Hn3mxrbU3MUcMSMXp4rIQA==}
+  node-ical@0.23.1:
+    resolution: {integrity: sha512-4+FON2u++r7vU9VfTCris9hgxS5darN4P7aQZOJkzDazXLRS7cExb0G5OWO3CzRs8gHd5um1fdSMF0e45f7xAg==}
     engines: {node: '>=18'}
 
   node-loader@2.1.0:
@@ -9558,8 +9565,8 @@ packages:
   rrdom@0.1.7:
     resolution: {integrity: sha512-ZLd8f14z9pUy2Hk9y636cNv5Y2BMnNEY99wxzW9tD2BLDfe1xFxtLjB4q/xCBYo6HRe0wofzKzjm4JojmpBfFw==}
 
-  rrule@2.8.1:
-    resolution: {integrity: sha512-hM3dHSBMeaJ0Ktp7W38BJZ7O1zOgaFEsn41PDk+yHoEtfLV+PoJt9E9xAlZiWgf/iqEqionN0ebHFZIDAp+iGw==}
+  rrule-temporal@1.3.0:
+    resolution: {integrity: sha512-0duSf+wBX4FKNpznFDecEDkIzdoP7n3++Lt9TPpImhaRtENsa/qd3EhpV5Fi1TxVvBFN4ayOXVrK0aPvt+a80g==}
 
   rrweb-player@1.0.0-alpha.4:
     resolution: {integrity: sha512-Wlmn9GZ5Fdqa37vd3TzsYdLl/JWEvXNUrLCrYpnOwEgmY409HwVIvvA5aIo7k582LoKgdRCsB87N+f0oWAR0Kg==}
@@ -12213,6 +12220,10 @@ snapshots:
 
   '@js-sdsl/ordered-map@4.4.2': {}
 
+  '@js-temporal/polyfill@0.5.1':
+    dependencies:
+      jsbi: 4.3.2
+
   '@jsep-plugin/assignment@1.3.0(jsep@1.4.0)':
     dependencies:
       jsep: 1.4.0
@@ -17062,6 +17073,8 @@ snapshots:
     dependencies:
       argparse: 2.0.1
 
+  jsbi@4.3.2: {}
+
   jsbn@1.1.0: {}
 
   jsdom@28.1.0(@noble/hashes@2.0.1):
@@ -17849,9 +17862,10 @@ snapshots:
 
   node-gyp-build@4.8.4: {}
 
-  node-ical@0.22.1:
+  node-ical@0.23.1:
     dependencies:
-      rrule: 2.8.1
+      '@js-temporal/polyfill': 0.5.1
+      rrule-temporal: 1.3.0
 
   node-loader@2.1.0(webpack@5.94.0):
     dependencies:
@@ -18961,9 +18975,9 @@ snapshots:
     dependencies:
       rrweb-snapshot: 2.0.0-alpha.4
 
-  rrule@2.8.1:
+  rrule-temporal@1.3.0:
     dependencies:
-      tslib: 2.8.1
+      '@js-temporal/polyfill': 0.5.1
 
   rrweb-player@1.0.0-alpha.4:
     dependencies: