diff --git a/package.json b/package.json
index 6e8fcd85..1f90f540 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "spire": "4.1.2",
     "spire-plugin-semantic-release": "4.1.0",
     "storybook-readme": "5.0.9",
-    "typescript": "4.0.5"
+    "typescript": "4.9.4"
   },
   "files": [
     "lib",
diff --git a/yarn.lock b/yarn.lock
index 58dd2df1..15cac865 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -15033,10 +15033,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@4.0.5:
-  version "4.0.5"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.5.tgz#ae9dddfd1069f1cb5beb3ef3b2170dd7c1332389"
-  integrity sha512-ywmr/VrTVCmNTJ6iV2LwIrfG1P+lv6luD8sUJs+2eI9NLGigaN+nUQc13iHqisq7bra9lnmUSYqbJvegraBOPQ==
+typescript@4.9.4:
+  version "4.9.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.9.4.tgz#a2a3d2756c079abda241d75f149df9d561091e78"
+  integrity sha512-Uz+dTXYzxXXbsFpM86Wh3dKCxrQqUcVMxwU54orwlJjOpO3ao8L7j5lH+dWfTwgCwIuM9GQ2kvVotzYJMXTBZg==
 
 typescript@^3.9.7:
   version "3.9.10"