diff --git a/packages/gateway-edge-nextjs/package.json b/packages/gateway-edge-nextjs/package.json
index b19c1293b..e73a85325 100644
--- a/packages/gateway-edge-nextjs/package.json
+++ b/packages/gateway-edge-nextjs/package.json
@@ -18,7 +18,7 @@
     "@dotkomonline/db": "workspace:*",
     "@dotkomonline/types": "workspace:^",
     "@trpc/react-query": "^10.45.2",
-    "ical-generator": "^5.0.1",
+    "ical-generator": "^8.0.0",
     "jsonwebtoken": "^9.0.2",
     "next-auth": "^4.24.8",
     "stripe": "^13.11.0"
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index f1a41243a..2f5d1ccba 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -815,8 +815,8 @@ importers:
         specifier: ^10.45.2
         version: 10.45.2(@tanstack/react-query@5.64.2(react@19.0.0))(@trpc/client@10.45.2(@trpc/server@10.45.2))(@trpc/server@10.45.2)(react-dom@19.0.0(react@19.0.0))(react@19.0.0)
       ical-generator:
-        specifier: ^5.0.1
-        version: 5.0.1(@types/node@22.13.5)(dayjs@1.11.13)
+        specifier: ^8.0.0
+        version: 8.1.1(@types/node@22.13.5)(dayjs@1.11.13)
       jsonwebtoken:
         specifier: ^9.0.2
         version: 9.0.2
@@ -5316,14 +5316,14 @@ packages:
     resolution: {integrity: sha512-AXcZb6vzzrFAUE61HnN4mpLqd/cSIwNQjtNWR0euPm6y0iqx3G4gOXaIDdtdDwZmhwe82LA6+zinmW4UBWVePQ==}
     engines: {node: '>=16.17.0'}
 
-  ical-generator@5.0.1:
-    resolution: {integrity: sha512-ln2cbzi+Z+f9WrWseU4B75Ccwb2hMpgjTYkriSPmqODmOCWNYknTSWiLSrCkl0cHiWcwaTWstMPLDyiFbELmoA==}
-    engines: {node: ^16.0.0 || >=18.0.0}
+  ical-generator@8.1.1:
+    resolution: {integrity: sha512-vorfUDZk4NaVLB7f1pm9AeRGy0jTYn7QUHZCFCMx3EGOz9+yykdAjA1i4ez+ZLAEK55lmutCXvVovEdTj9s1XA==}
+    engines: {node: 18 || 20 || >=22.0.0}
     peerDependencies:
       '@touch4it/ical-timezones': '>=1.6.0'
       '@types/luxon': '>= 1.26.0'
       '@types/mocha': '>= 8.2.1'
-      '@types/node': '>= 15.0.0'
+      '@types/node': '*'
       dayjs: '>= 1.10.0'
       luxon: '>= 1.26.0'
       moment: '>= 2.29.0'
@@ -12858,7 +12858,7 @@ snapshots:
 
   human-signals@5.0.0: {}
 
-  ical-generator@5.0.1(@types/node@22.13.5)(dayjs@1.11.13):
+  ical-generator@8.1.1(@types/node@22.13.5)(dayjs@1.11.13):
     dependencies:
       uuid-random: 1.3.2
     optionalDependencies: