diff --git a/package.json b/package.json
index 784e4d45..c781fa96 100644
--- a/package.json
+++ b/package.json
@@ -63,7 +63,7 @@
     "rimraf": "3.0.2",
     "spire": "3.2.3",
     "spire-plugin-semantic-release": "3.2.3",
-    "typescript": "4.8.4"
+    "typescript": "4.9.3"
   },
   "dependencies": {
     "@types/highlight.js": "^9.12.3",
diff --git a/yarn.lock b/yarn.lock
index 38f52150..e22e89c2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -10402,10 +10402,10 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
-typescript@4.8.4:
-  version "4.8.4"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.8.4.tgz#c464abca159669597be5f96b8943500b238e60e6"
-  integrity sha512-QCh+85mCy+h0IGff8r5XWzOVSbBO+KfeYrMQh7NJ58QujwcE22u+NUSmUxqF+un70P9GXKxa2HCNiTTMJknyjQ==
+typescript@4.9.3:
+  version "4.9.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.9.3.tgz#3aea307c1746b8c384435d8ac36b8a2e580d85db"
+  integrity sha512-CIfGzTelbKNEnLpLdGFgdyKhG23CKdKgQPOBc+OUNrkJ2vr+KSzsSV5kq5iWhEQbok+quxgGzrAtGWCyU7tHnA==
 
 typescript@^3.9.7:
   version "3.9.10"