diff --git a/package-lock.json b/package-lock.json
index befe900..75fa81a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -23,7 +23,7 @@
                 "sprotty": "^1.4.0",
                 "sprotty-elk": "^1.4.0",
                 "sprotty-protocol": "^1.4.0",
-                "typescript": "^5.8.3",
+                "typescript": "^5.9.3",
                 "typescript-eslint": "^8.39.1",
                 "vite": "^7.1.2"
             }
@@ -3076,11 +3076,10 @@
             }
         },
         "node_modules/typescript": {
-            "version": "5.8.3",
-            "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.8.3.tgz",
-            "integrity": "sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ==",
+            "version": "5.9.3",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+            "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
             "dev": true,
-            "license": "Apache-2.0",
             "bin": {
                 "tsc": "bin/tsc",
                 "tsserver": "bin/tsserver"
@@ -5202,9 +5201,9 @@
             }
         },
         "typescript": {
-            "version": "5.8.3",
-            "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.8.3.tgz",
-            "integrity": "sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ==",
+            "version": "5.9.3",
+            "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+            "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
             "dev": true
         },
         "typescript-eslint": {
diff --git a/package.json b/package.json
index 74580da..e3198db 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
         "sprotty": "^1.4.0",
         "sprotty-elk": "^1.4.0",
         "sprotty-protocol": "^1.4.0",
-        "typescript": "^5.8.3",
+        "typescript": "^5.9.3",
         "typescript-eslint": "^8.39.1",
         "vite": "^7.1.2"
     },