diff --git a/package-lock.json b/package-lock.json
index e730e9b..5f1430d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,7 +17,7 @@
         "@nextcloud/browserslist-config": "^3.1.0",
         "jest": "^30.2.0",
         "typedoc": "^0.28.14",
-        "typescript": "^5.4.5"
+        "typescript": "^5.9.3"
       }
     },
     "node_modules/@babel/code-frame": {
@@ -4420,9 +4420,9 @@
       }
     },
     "node_modules/typescript": {
-      "version": "5.4.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.4.5.tgz",
-      "integrity": "sha512-vcI4UpRgg81oIRUFwR0WSIHKt11nJ7SAVlYNIu+QpqeyXP+gpQJy/Z4+F0aGxSE4MqwjyXvW/TzgkLAx2AGHwQ==",
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
       "dev": true,
       "bin": {
         "tsc": "bin/tsc",
@@ -7995,9 +7995,9 @@
       }
     },
     "typescript": {
-      "version": "5.4.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.4.5.tgz",
-      "integrity": "sha512-vcI4UpRgg81oIRUFwR0WSIHKt11nJ7SAVlYNIu+QpqeyXP+gpQJy/Z4+F0aGxSE4MqwjyXvW/TzgkLAx2AGHwQ==",
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
       "dev": true
     },
     "uc.micro": {
diff --git a/package.json b/package.json
index 07922ed..11de445 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "@nextcloud/browserslist-config": "^3.1.0",
     "jest": "^30.2.0",
     "typedoc": "^0.28.14",
-    "typescript": "^5.4.5"
+    "typescript": "^5.9.3"
   },
   "browserslist": [
     "extends @nextcloud/browserslist-config"