diff --git a/package.json b/package.json
index ea2c086d..54b6b424 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "markdownlint-cli": "^0.48.0",
     "prettier": "^3.6.2",
     "tailwindcss": "^4.1.16",
-    "typescript": "~5.8.3",
+    "typescript": "~5.9.3",
     "typescript-eslint": "^8.46.3",
     "vite": "6.4.1"
   },
diff --git a/yarn.lock b/yarn.lock
index 394fcca5..e12c5d6a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6520,10 +6520,10 @@ typescript-eslint@^8.46.3:
     "@typescript-eslint/typescript-estree" "8.48.0"
     "@typescript-eslint/utils" "8.48.0"
 
-typescript@~5.8.3:
-  version "5.8.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.8.3.tgz#92f8a3e5e3cf497356f4178c34cd65a7f5e8440e"
-  integrity sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ==
+typescript@~5.9.3:
+  version "5.9.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.9.3.tgz#5b4f59e15310ab17a216f5d6cf53ee476ede670f"
+  integrity sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==
 
 ua-parser-js@^1.0.37:
   version "1.0.40"