diff --git a/package.json b/package.json
index 87e07044..b48a35cc 100644
--- a/package.json
+++ b/package.json
@@ -73,7 +73,7 @@
     "rollup-plugin-sourcemaps": "^0.6.3",
     "source-map-support": "^0.5.19",
     "terser": "^5.3.8",
-    "typescript": "^4.0.5",
+    "typescript": "^5.6.3",
     "typescript-json-schema": "^0.64.0",
     "vega-datasets": "latest",
     "vega-lite-dev-config": "^0.18.0"
diff --git a/yarn.lock b/yarn.lock
index eebae3c3..05b30720 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7634,11 +7634,16 @@ typescript-json-schema@^0.64.0:
     typescript "~5.1.0"
     yargs "^17.1.1"
 
-typescript@^4.0.5, typescript@^4.3.5:
+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@^5.6.3:
+  version "5.6.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.6.3.tgz#5f3449e31c9d94febb17de03cc081dd56d81db5b"
+  integrity sha512-hjcS1mhfuyi4WW8IWtjP7brDrG2cuDZukyrYrSauoXGNgx0S7zceP07adYkJycEr56BOUTNPzbInooiN3fn1qw==
+
 typescript@~5.1.0:
   version "5.1.6"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.1.6.tgz#02f8ac202b6dad2c0dd5e0913745b47a37998274"