diff --git a/flipper-js-client-sdk/package.json b/flipper-js-client-sdk/package.json
index a2bcc8c1a..671911a2c 100644
--- a/flipper-js-client-sdk/package.json
+++ b/flipper-js-client-sdk/package.json
@@ -27,7 +27,7 @@
   "licenseFilename": "LICENSE",
   "readmeFilename": "README.md",
   "devDependencies": {
-    "@typescript-eslint/eslint-plugin": "^4.20.0",
+    "@typescript-eslint/eslint-plugin": "^4.21.0",
     "@typescript-eslint/parser": "^4.20.0",
     "ansi-to-html": "^0.6.3",
     "babel-eslint": "^10.0.1",
diff --git a/flipper-js-client-sdk/yarn.lock b/flipper-js-client-sdk/yarn.lock
index 7e2fbee61..58dd28cbc 100644
--- a/flipper-js-client-sdk/yarn.lock
+++ b/flipper-js-client-sdk/yarn.lock
@@ -161,13 +161,13 @@
   resolved "https://registry.yarnpkg.com/@types/json5/-/json5-0.0.29.tgz#ee28707ae94e11d2b827bcbe5270bcea7f3e71ee"
   integrity sha1-7ihweulOEdK4J7y+UnC86n8+ce4=
 
-"@typescript-eslint/eslint-plugin@^4.20.0":
-  version "4.20.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/eslint-plugin/-/eslint-plugin-4.20.0.tgz#9d8794bd99aad9153092ad13c96164e3082e9a92"
-  integrity sha512-sw+3HO5aehYqn5w177z2D82ZQlqHCwcKSMboueo7oE4KU9QiC0SAgfS/D4z9xXvpTc8Bt41Raa9fBR8T2tIhoQ==
+"@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" "4.20.0"
-    "@typescript-eslint/scope-manager" "4.20.0"
+    "@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"
@@ -175,15 +175,15 @@
     semver "^7.3.2"
     tsutils "^3.17.1"
 
-"@typescript-eslint/experimental-utils@4.20.0":
-  version "4.20.0"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/experimental-utils/-/experimental-utils-4.20.0.tgz#a8ab2d7b61924f99042b7d77372996d5f41dc44b"
-  integrity sha512-sQNlf6rjLq2yB5lELl3gOE7OuoA/6IVXJUJ+Vs7emrQMva14CkOwyQwD7CW+TkmOJ4Q/YGmoDLmbfFrpGmbKng==
+"@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" "4.20.0"
-    "@typescript-eslint/types" "4.20.0"
-    "@typescript-eslint/typescript-estree" "4.20.0"
+    "@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"
 
@@ -205,11 +205,24 @@
     "@typescript-eslint/types" "4.20.0"
     "@typescript-eslint/visitor-keys" "4.20.0"
 
+"@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" "4.21.0"
+    "@typescript-eslint/visitor-keys" "4.21.0"
+
 "@typescript-eslint/types@4.20.0":
   version "4.20.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/types/-/types-4.20.0.tgz#c6cf5ef3c9b1c8f699a9bbdafb7a1da1ca781225"
   integrity sha512-cYY+1PIjei1nk49JAPnH1VEnu7OYdWRdJhYI5wiKOUMhLTG1qsx5cQxCUTuwWCmQoyriadz3Ni8HZmGSofeC+w==
 
+"@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@4.20.0":
   version "4.20.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/typescript-estree/-/typescript-estree-4.20.0.tgz#8b3b08f85f18a8da5d88f65cb400f013e88ab7be"
@@ -223,6 +236,19 @@
     semver "^7.3.2"
     tsutils "^3.17.1"
 
+"@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" "4.21.0"
+    "@typescript-eslint/visitor-keys" "4.21.0"
+    debug "^4.1.1"
+    globby "^11.0.1"
+    is-glob "^4.0.1"
+    semver "^7.3.2"
+    tsutils "^3.17.1"
+
 "@typescript-eslint/visitor-keys@4.20.0":
   version "4.20.0"
   resolved "https://registry.yarnpkg.com/@typescript-eslint/visitor-keys/-/visitor-keys-4.20.0.tgz#1e84db034da13f208325e6bfc995c3b75f7dbd62"
@@ -231,6 +257,14 @@
     "@typescript-eslint/types" "4.20.0"
     eslint-visitor-keys "^2.0.0"
 
+"@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" "4.21.0"
+    eslint-visitor-keys "^2.0.0"
+
 acorn-jsx@^5.3.1:
   version "5.3.1"
   resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-5.3.1.tgz#fc8661e11b7ac1539c47dbfea2e72b3af34d267b"