diff --git a/package.json b/package.json
index 76d607ed..9b3a282b 100644
--- a/package.json
+++ b/package.json
@@ -236,7 +236,7 @@
     "prettier": "2.0.5",
     "react-app-rewired": "^2.1.6",
     "truffle": "5.1.23",
-    "typescript": "~3.7.2",
+    "typescript": "^3.9.5",
     "wait-on": "5.0.0",
     "web3-utils": "^1.2.8"
   }
diff --git a/yarn.lock b/yarn.lock
index 68b5017d..497d87f7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -16115,10 +16115,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@~3.7.2:
-  version "3.7.5"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.5.tgz#0692e21f65fd4108b9330238aac11dd2e177a1ae"
-  integrity sha512-/P5lkRXkWHNAbcJIiHPfRoKqyd7bsyCma1hZNUGfn20qm64T6ZBlrzprymeu918H+mB/0rIg2gGK/BXkhhYgBw==
+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==
 
 u2f-api@0.2.7:
   version "0.2.7"
@@ -17272,6 +17272,7 @@ websocket-extensions@>=0.1.1:
   dependencies:
     debug "^2.2.0"
     es5-ext "^0.10.50"
+    gulp "^4.0.2"
     nan "^2.14.0"
     typedarray-to-buffer "^3.1.5"
     yaeti "^0.0.6"