diff --git a/api/.yarn/cache/ical-generator-npm-7.0.0-82f397278b-d5c1672423.zip b/api/.yarn/cache/ical-generator-npm-7.0.0-82f397278b-d5c1672423.zip
deleted file mode 100644
index 00f807814..000000000
Binary files a/api/.yarn/cache/ical-generator-npm-7.0.0-82f397278b-d5c1672423.zip and /dev/null differ
diff --git a/api/.yarn/cache/ical-generator-npm-9.0.0-4ee12044c1-382249cca0.zip b/api/.yarn/cache/ical-generator-npm-9.0.0-4ee12044c1-382249cca0.zip
new file mode 100644
index 000000000..91736165b
Binary files /dev/null and b/api/.yarn/cache/ical-generator-npm-9.0.0-4ee12044c1-382249cca0.zip differ
diff --git a/api/.yarn/cache/uuid-random-npm-1.3.2-4542821677-9070c87665.zip b/api/.yarn/cache/uuid-random-npm-1.3.2-4542821677-9070c87665.zip
deleted file mode 100644
index 3c8b05e1a..000000000
Binary files a/api/.yarn/cache/uuid-random-npm-1.3.2-4542821677-9070c87665.zip and /dev/null differ
diff --git a/api/package.json b/api/package.json
index dd1693a41..444ed66b0 100644
--- a/api/package.json
+++ b/api/package.json
@@ -29,7 +29,7 @@
     "graphile-utils": "4.13.0",
     "graphql": "^16.9.0",
     "graphql-upload-ts": "^2.1.2",
-    "ical-generator": "^7.0.0",
+    "ical-generator": "^9.0.0",
     "postgraphile": "4.13.0",
     "postgraphile-plugin-connection-filter": "^2.3.0",
     "postgres-migrations": "^5.3.0",
diff --git a/api/yarn.lock b/api/yarn.lock
index 726220064..b53cd3d1b 100644
--- a/api/yarn.lock
+++ b/api/yarn.lock
@@ -1307,7 +1307,7 @@ __metadata:
     graphile-utils: "npm:4.13.0"
     graphql: "npm:^16.9.0"
     graphql-upload-ts: "npm:^2.1.2"
-    ical-generator: "npm:^7.0.0"
+    ical-generator: "npm:^9.0.0"
     lint-staged: "npm:^15.2.2"
     nodemon: "npm:^3.1.7"
     postgraphile: "npm:4.13.0"
@@ -2361,11 +2361,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"ical-generator@npm:^7.0.0":
-  version: 7.0.0
-  resolution: "ical-generator@npm:7.0.0"
-  dependencies:
-    uuid-random: "npm:^1.3.2"
+"ical-generator@npm:^9.0.0":
+  version: 9.0.0
+  resolution: "ical-generator@npm:9.0.0"
   peerDependencies:
     "@touch4it/ical-timezones": ">=1.6.0"
     "@types/luxon": ">= 1.26.0"
@@ -2394,7 +2392,7 @@ __metadata:
       optional: true
     rrule:
       optional: true
-  checksum: 10/d5c16724238ebd9ddd35ec633b66f97f1bf7b1942e6076a37c287416d1f81b82a4cb0401014df07fa64f0fac7dd0511d3f01495ca27185bf7ea0015ea0bb8fc4
+  checksum: 10/382249cca062b887c607b3abcfa6c869e94270def437f47a7b3f5d69d1864d6ebb1d900a158a0d2c5cf1e6d266d0950ab75a8b9f7bac5d98a335d9ae5e544f9a
   languageName: node
   linkType: hard
 
@@ -4370,13 +4368,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"uuid-random@npm:^1.3.2":
-  version: 1.3.2
-  resolution: "uuid-random@npm:1.3.2"
-  checksum: 10/9070c876651e1893f9255dddab2edc177ba34196660065be074050e4143405382b7f0f5fb922b666ebfd0794a6ef7b9f6acb627865df7b2978edb0da6b448f1d
-  languageName: node
-  linkType: hard
-
 "v8-compile-cache-lib@npm:^3.0.1":
   version: 3.0.1
   resolution: "v8-compile-cache-lib@npm:3.0.1"