diff --git a/html/package.json b/html/package.json
index 6f3a0ba..38be865 100644
--- a/html/package.json
+++ b/html/package.json
@@ -38,7 +38,7 @@
     "ts-loader": "^9.2.3",
     "tslint": "^6.1.3",
     "tslint-loader": "^3.5.4",
-    "typescript": "^4.2.4",
+    "typescript": "^4.3.4",
     "util": "^0.12.4",
     "webpack": "^5.39.1",
     "webpack-cli": "^4.7.2",
diff --git a/html/yarn.lock b/html/yarn.lock
index ccde0c1..d5983b4 100644
--- a/html/yarn.lock
+++ b/html/yarn.lock
@@ -7128,10 +7128,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@^4.2.4:
-  version "4.2.4"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.2.4.tgz#8610b59747de028fda898a8aef0e103f156d0961"
-  integrity sha512-V+evlYHZnQkaz8TRBuxTA92yZBPotr5H+WhQ7bD3hZUndx5tGOa1fuCgeSjxAzM1RiN5IzvadIXTVefuuwZCRg==
+typescript@^4.3.4:
+  version "4.3.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.3.4.tgz#3f85b986945bcf31071decdd96cf8bfa65f9dcbc"
+  integrity sha512-uauPG7XZn9F/mo+7MrsRjyvbxFpzemRjKEZXS4AK83oP2KKOJPvb+9cO/gmnv8arWZvhnjVOXz7B49m1l0e9Ew==
 
 unbox-primitive@^1.0.0:
   version "1.0.1"