diff --git a/package.json b/package.json
index e49eb27e..4e888e00 100644
--- a/package.json
+++ b/package.json
@@ -35,8 +35,8 @@
 				"husky": "2.4.1",
 				"nodemon": "1.18.10",
 				"semantic-release": "15.13.3",
-				"tslint": "5.17.0",
-				"typescript": "3.5.1"
+				"tslint": "5.20.1",
+				"typescript": "3.9.8"
 		},
 		"dependencies": {
 				"json-typescript": "^1.0.0"
diff --git a/yarn.lock b/yarn.lock
index 020b3ac5..97ca0f62 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2486,11 +2486,6 @@ dezalgo@^1.0.0, dezalgo@~1.0.3:
     asap "^2.0.0"
     wrappy "1"
 
-diff@^3.2.0:
-  version "3.5.0"
-  resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
-  integrity sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==
-
 diff@^4.0.1:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.2.tgz#60f3aecb89d5fae520c11aa19efc2bb982aade7d"
@@ -6958,26 +6953,7 @@ tslib@^1.8.0, tslib@^1.8.1:
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.14.1.tgz#cf2d38bdc34a134bcaf1091c41f6619e2f672d00"
   integrity sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==
 
-tslint@5.17.0:
-  version "5.17.0"
-  resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.17.0.tgz#f9f0ce2011d8e90debaa6e9b4975f24cd16852b8"
-  integrity sha512-pflx87WfVoYepTet3xLfDOLDm9Jqi61UXIKePOuca0qoAZyrGWonDG9VTbji58Fy+8gciUn8Bt7y69+KEVjc/w==
-  dependencies:
-    "@babel/code-frame" "^7.0.0"
-    builtin-modules "^1.1.1"
-    chalk "^2.3.0"
-    commander "^2.12.1"
-    diff "^3.2.0"
-    glob "^7.1.1"
-    js-yaml "^3.13.1"
-    minimatch "^3.0.4"
-    mkdirp "^0.5.1"
-    resolve "^1.3.2"
-    semver "^5.3.0"
-    tslib "^1.8.0"
-    tsutils "^2.29.0"
-
-tslint@^5.14.0:
+tslint@5.20.1, tslint@^5.14.0:
   version "5.20.1"
   resolved "https://registry.yarnpkg.com/tslint/-/tslint-5.20.1.tgz#e401e8aeda0152bc44dd07e614034f3f80c67b7d"
   integrity sha512-EcMxhzCFt8k+/UP5r8waCf/lzmeSyVlqxqMEDQE7rWYiQky8KpIBz1JAoYXfROHrPZ1XXd43q8yQnULOLiBRQg==
@@ -7040,10 +7016,10 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@3.5.1:
-  version "3.5.1"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.5.1.tgz#ba72a6a600b2158139c5dd8850f700e231464202"
-  integrity sha512-64HkdiRv1yYZsSe4xC1WVgamNigVYjlssIoaH2HcZF0+ijsk5YK2g0G34w9wJkze8+5ow4STd22AynfO6ZYYLw==
+typescript@3.9.8:
+  version "3.9.8"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.8.tgz#7d937ba4e4044af7fa83d127b982f8f61ca816a4"
+  integrity sha512-nDbnFkUZZjkQ92qwKX+C+jtk4OGfU8H9toSEs3uAsl8cxLjG2sqQm6leF/pLWvm9FAEJ6KHkYMAbHYaY2ITeVg==
 
 typescript@next:
   version "4.2.0-dev.20210208"