diff --git a/package.json b/package.json
index 0aff6c5e..5152f6d5 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "ts-jest": "26.5.6",
     "tslint": "6.1.3",
     "tslint-config-standard": "9.0.0",
-    "typescript": "4.3.5"
+    "typescript": "5.9.3"
   },
   "engines": {
     "node": ">= 10"
diff --git a/yarn.lock b/yarn.lock
index fde8a133..04e46584 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4969,10 +4969,10 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
-typescript@4.3.5:
-  version "4.3.5"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.3.5.tgz#4d1c37cc16e893973c45a06886b7113234f119f4"
-  integrity sha512-DqQgihaQ9cUrskJo9kIyW/+g0Vxsk8cDtZ52a3NGh0YNTfpUSArXSohyUGnvbPazEPLu398C0UxmKSOrPumUzA==
+typescript@5.9.3:
+  version "5.9.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.9.3.tgz#5b4f59e15310ab17a216f5d6cf53ee476ede670f"
+  integrity sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==
 
 uglify-js@^3.1.4:
   version "3.17.4"