diff --git a/package.json b/package.json
index 9b66c95..dc068c8 100644
--- a/package.json
+++ b/package.json
@@ -67,9 +67,9 @@
     "@types/express": "4.17.9",
     "@types/jest": "26.0.15",
     "@types/node": "12.12.28",
-    "@typescript-eslint/eslint-plugin": "4.8.1",
-    "@typescript-eslint/parser": "4.8.1",
-    "@typescript-eslint/typescript-estree": "4.8.1",
+    "@typescript-eslint/eslint-plugin": "4.21.0",
+    "@typescript-eslint/parser": "4.21.0",
+    "@typescript-eslint/typescript-estree": "4.21.0",
     "conventional-changelog-cli": "2.1.1",
     "conventional-github-releaser": "3.1.5",
     "eslint": "7.13.0",
diff --git a/yarn.lock b/yarn.lock
index f35f4db..5088550 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -999,74 +999,74 @@
   dependencies:
     "@types/yargs-parser" "*"
 
-"@typescript-eslint/eslint-plugin@4.8.1":
-  version "4.8.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.8.1.tgz#b362abe0ee478a6c6d06c14552a6497f0b480769"
-  integrity sha512-d7LeQ7dbUrIv5YVFNzGgaW3IQKMmnmKFneRWagRlGYOSfLJVaRbj/FrBNOBC1a3tVO+TgNq1GbHvRtg1kwL0FQ==
+"@typescript-eslint/eslint-plugin@4.21.0":
+  version "4.21.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.21.0.tgz#3fce2bfa76d95c00ac4f33dff369cb593aab8878"
+  integrity sha512-FPUyCPKZbVGexmbCFI3EQHzCZdy2/5f+jv6k2EDljGdXSRc0cKvbndd2nHZkSLqCNOPk0jB6lGzwIkglXcYVsQ==
   dependencies:
-    "@typescript-eslint/experimental-utils" "4.8.1"
-    "@typescript-eslint/scope-manager" "4.8.1"
+    "@typescript-eslint/experimental-utils" "4.21.0"
+    "@typescript-eslint/scope-manager" "4.21.0"
     debug "^4.1.1"
     functional-red-black-tree "^1.0.1"
+    lodash "^4.17.15"
     regexpp "^3.0.0"
     semver "^7.3.2"
     tsutils "^3.17.1"
 
-"@typescript-eslint/experimental-utils@4.8.1":
-  version "4.8.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/experimental-utils/-/experimental-utils-4.8.1.tgz#27275c20fa4336df99ebcf6195f7d7aa7aa9f22d"
-  integrity sha512-WigyLn144R3+lGATXW4nNcDJ9JlTkG8YdBWHkDlN0lC3gUGtDi7Pe3h5GPvFKMcRz8KbZpm9FJV9NTW8CpRHpg==
+"@typescript-eslint/experimental-utils@4.21.0":
+  version "4.21.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/experimental-utils/-/experimental-utils-4.21.0.tgz#0b0bb7c15d379140a660c003bdbafa71ae9134b6"
+  integrity sha512-cEbgosW/tUFvKmkg3cU7LBoZhvUs+ZPVM9alb25XvR0dal4qHL3SiUqHNrzoWSxaXA9gsifrYrS1xdDV6w/gIA==
   dependencies:
     "@types/json-schema" "^7.0.3"
-    "@typescript-eslint/scope-manager" "4.8.1"
-    "@typescript-eslint/types" "4.8.1"
-    "@typescript-eslint/typescript-estree" "4.8.1"
+    "@typescript-eslint/scope-manager" "4.21.0"
+    "@typescript-eslint/types" "4.21.0"
+    "@typescript-eslint/typescript-estree" "4.21.0"
     eslint-scope "^5.0.0"
     eslint-utils "^2.0.0"
 
-"@typescript-eslint/parser@4.8.1":
-  version "4.8.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-4.8.1.tgz#4fe2fbdbb67485bafc4320b3ae91e34efe1219d1"
-  integrity sha512-QND8XSVetATHK9y2Ltc/XBl5Ro7Y62YuZKnPEwnNPB8E379fDsvzJ1dMJ46fg/VOmk0hXhatc+GXs5MaXuL5Uw==
+"@typescript-eslint/parser@4.21.0":
+  version "4.21.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-4.21.0.tgz#a227fc2af4001668c3e3f7415d4feee5093894c1"
+  integrity sha512-eyNf7QmE5O/l1smaQgN0Lj2M/1jOuNg2NrBm1dqqQN0sVngTLyw8tdCbih96ixlhbF1oINoN8fDCyEH9SjLeIA==
   dependencies:
-    "@typescript-eslint/scope-manager" "4.8.1"
-    "@typescript-eslint/types" "4.8.1"
-    "@typescript-eslint/typescript-estree" "4.8.1"
+    "@typescript-eslint/scope-manager" "4.21.0"
+    "@typescript-eslint/types" "4.21.0"
+    "@typescript-eslint/typescript-estree" "4.21.0"
     debug "^4.1.1"
 
-"@typescript-eslint/scope-manager@4.8.1":
-  version "4.8.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-4.8.1.tgz#e343c475f8f1d15801b546cb17d7f309b768fdce"
-  integrity sha512-r0iUOc41KFFbZdPAdCS4K1mXivnSZqXS5D9oW+iykQsRlTbQRfuFRSW20xKDdYiaCoH+SkSLeIF484g3kWzwOQ==
+"@typescript-eslint/scope-manager@4.21.0":
+  version "4.21.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/scope-manager/-/scope-manager-4.21.0.tgz#c81b661c4b8af1ec0c010d847a8f9ab76ab95b4d"
+  integrity sha512-kfOjF0w1Ix7+a5T1knOw00f7uAP9Gx44+OEsNQi0PvvTPLYeXJlsCJ4tYnDj5PQEYfpcgOH5yBlw7K+UEI9Agw==
   dependencies:
-    "@typescript-eslint/types" "4.8.1"
-    "@typescript-eslint/visitor-keys" "4.8.1"
+    "@typescript-eslint/types" "4.21.0"
+    "@typescript-eslint/visitor-keys" "4.21.0"
 
-"@typescript-eslint/types@4.8.1":
-  version "4.8.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-4.8.1.tgz#23829c73c5fc6f4fcd5346a7780b274f72fee222"
-  integrity sha512-ave2a18x2Y25q5K05K/U3JQIe2Av4+TNi/2YuzyaXLAsDx6UZkz1boZ7nR/N6Wwae2PpudTZmHFXqu7faXfHmA==
+"@typescript-eslint/types@4.21.0":
+  version "4.21.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-4.21.0.tgz#abdc3463bda5d31156984fa5bc316789c960edef"
+  integrity sha512-+OQaupjGVVc8iXbt6M1oZMwyKQNehAfLYJJ3SdvnofK2qcjfor9pEM62rVjBknhowTkh+2HF+/KdRAc/wGBN2w==
 
-"@typescript-eslint/typescript-estree@4.8.1":
-  version "4.8.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-4.8.1.tgz#7307e3f2c9e95df7daa8dc0a34b8c43b7ec0dd32"
-  integrity sha512-bJ6Fn/6tW2g7WIkCWh3QRlaSU7CdUUK52shx36/J7T5oTQzANvi6raoTsbwGM11+7eBbeem8hCCKbyvAc0X3sQ==
+"@typescript-eslint/typescript-estree@4.21.0":
+  version "4.21.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-4.21.0.tgz#3817bd91857beeaeff90f69f1f112ea58d350b0a"
+  integrity sha512-ZD3M7yLaVGVYLw4nkkoGKumb7Rog7QID9YOWobFDMQKNl+vPxqVIW/uDk+MDeGc+OHcoG2nJ2HphwiPNajKw3w==
   dependencies:
-    "@typescript-eslint/types" "4.8.1"
-    "@typescript-eslint/visitor-keys" "4.8.1"
+    "@typescript-eslint/types" "4.21.0"
+    "@typescript-eslint/visitor-keys" "4.21.0"
     debug "^4.1.1"
     globby "^11.0.1"
     is-glob "^4.0.1"
-    lodash "^4.17.15"
     semver "^7.3.2"
     tsutils "^3.17.1"
 
-"@typescript-eslint/visitor-keys@4.8.1":
-  version "4.8.1"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-4.8.1.tgz#794f68ee292d1b2e3aa9690ebedfcb3a8c90e3c3"
-  integrity sha512-3nrwXFdEYALQh/zW8rFwP4QltqsanCDz4CwWMPiIZmwlk9GlvBeueEIbq05SEq4ganqM0g9nh02xXgv5XI3PeQ==
+"@typescript-eslint/visitor-keys@4.21.0":
+  version "4.21.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-4.21.0.tgz#990a9acdc124331f5863c2cf21c88ba65233cd8d"
+  integrity sha512-dH22dROWGi5Z6p+Igc8bLVLmwy7vEe8r+8c+raPQU0LxgogPUrRAtRGtvBWmlr9waTu3n+QLt/qrS/hWzk1x5w==
   dependencies:
-    "@typescript-eslint/types" "4.8.1"
+    "@typescript-eslint/types" "4.21.0"
     eslint-visitor-keys "^2.0.0"
 
 JSONStream@^1.0.4: