diff --git a/html/package.json b/html/package.json
index c3e4dfc..a3b67f8 100644
--- a/html/package.json
+++ b/html/package.json
@@ -54,7 +54,7 @@
     "ts-loader": "^7.0.4",
     "tslint": "^6.1.2",
     "tslint-loader": "^3.5.4",
-    "typescript": "^3.9.3",
+    "typescript": "^3.9.5",
     "webpack": "4.43.0",
     "webpack-cli": "^3.3.11",
     "webpack-dev-server": "^3.11.0",
diff --git a/html/yarn.lock b/html/yarn.lock
index 1b76e01..b729916 100644
--- a/html/yarn.lock
+++ b/html/yarn.lock
@@ -7997,10 +7997,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@^3.9.3:
-  version "3.9.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.3.tgz#d3ac8883a97c26139e42df5e93eeece33d610b8a"
-  integrity sha512-D/wqnB2xzNFIcoBG9FG8cXRDjiqSTbG2wd8DMZeQyJlP1vfTkIxH4GKveWaEBYySKIg+USu+E+EDIR47SqnaMQ==
+typescript@^3.9.5:
+  version "3.9.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.5.tgz#586f0dba300cde8be52dd1ac4f7e1009c1b13f36"
+  integrity sha512-hSAifV3k+i6lEoCJ2k6R2Z/rp/H3+8sdmcn5NrS3/3kE7+RyZXm9aqvxWqjEXHAd8b0pShatpcdMTvEdvAJltQ==
 
 unc-path-regex@^0.1.2:
   version "0.1.2"