diff --git a/package-lock.json b/package-lock.json
index a2b79a2..5e34a58 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,7 +22,7 @@
         "react-dom": "18.3.1",
         "react-router-dom": "7.6.0",
         "react-scripts": "5.0.1",
-        "typescript": "4.9.5",
+        "typescript": "5.9.3",
         "web-vitals": "3.5.0"
       },
       "devDependencies": {
@@ -17938,15 +17938,16 @@
       }
     },
     "node_modules/typescript": {
-      "version": "4.9.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.9.5.tgz",
-      "integrity": "sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g==",
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
+      "license": "Apache-2.0",
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
       },
       "engines": {
-        "node": ">=4.2.0"
+        "node": ">=14.17"
       }
     },
     "node_modules/unbox-primitive": {
diff --git a/package.json b/package.json
index d515b96..84b8ce6 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "react-dom": "18.3.1",
     "react-router-dom": "7.6.0",
     "react-scripts": "5.0.1",
-    "typescript": "4.9.5",
+    "typescript": "5.9.3",
     "web-vitals": "3.5.0"
   },
   "homepage": "https://ossf.github.io/scorecard-visualizer",