diff --git a/package-lock.json b/package-lock.json
index 89bb49d2..e740361a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
       },
       "devDependencies": {
         "@types/plotly.js": "^2.29.5",
-        "typescript": "^5.5.3"
+        "typescript": "^5.9.3"
       }
     },
     "node_modules/@choojs/findup": {
@@ -2052,10 +2052,11 @@
       }
     },
     "node_modules/typescript": {
-      "version": "5.5.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.5.3.tgz",
-      "integrity": "sha512-/hreyEujaB0w76zKo6717l3L0o/qEUtRgdvUBvlkhoWeOVMjMuHNHk0BRBzikzuGDqNmPQbg5ifMEqsHLiIUcQ==",
+      "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"
diff --git a/package.json b/package.json
index 94d090d9..fd7a8ac2 100644
--- a/package.json
+++ b/package.json
@@ -5,6 +5,6 @@
   },
   "devDependencies": {
     "@types/plotly.js": "^2.29.5",
-    "typescript": "^5.5.3"
+    "typescript": "^5.9.3"
   }
 }