diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e38d4a8e26a..4dfc574b9fdc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -94,6 +94,7 @@
 - `[jest-transform]` [**BREAKING**] Refactor API of transformers to pass an options bag rather than separate `config` and other options ([#10834](https://github.com/facebook/jest/pull/10834))
 - `[jest-types]` Fix `Config.ts` `projects` types ([#11285](https://github.com/facebook/jest/pull/11285))
 - `[jest-util]` Replace micromatch with picomatch to fix issues with negated globs ([#11287](https://github.com/facebook/jest/pull/11287))
+- `[jest-validate]` Use `en-US` locale to avoid case conversion problems while validating CLI options on machines with some certain locales(e.g. Turkish) set as default locale.  ([#11412](https://github.com/facebook/jest/pull/11412))
 - `[jest-worker]` [**BREAKING**] Use named exports ([#10623](https://github.com/facebook/jest/pull/10623))
 - `[jest-worker]` Do not swallow errors during serialization ([#10984](https://github.com/facebook/jest/pull/10984))
 - `[jest-worker]` Handle `ERR_IPC_CHANNEL_CLOSED` errors properly ([#11143](https://github.com/facebook/jest/pull/11143))
diff --git a/package.json b/package.json
index 9199313338af..f8531e6ba0d1 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "ansi-regex": "^5.0.0",
     "ansi-styles": "^5.0.0",
     "babel-plugin-replace-ts-export-assignment": "^0.0.2",
-    "camelcase": "^6.0.0",
+    "camelcase": "^6.2.0",
     "chalk": "^4.0.0",
     "chokidar": "^3.3.0",
     "codecov": "^3.0.0",
diff --git a/packages/jest-validate/package.json b/packages/jest-validate/package.json
index e0770b3dfd98..58694e2f73b9 100644
--- a/packages/jest-validate/package.json
+++ b/packages/jest-validate/package.json
@@ -15,7 +15,7 @@
   },
   "dependencies": {
     "@jest/types": "^27.0.0-next.8",
-    "camelcase": "^6.0.0",
+    "camelcase": "^6.2.0",
     "chalk": "^4.0.0",
     "jest-get-type": "^27.0.0-next.9",
     "leven": "^3.1.0",
diff --git a/packages/jest-validate/src/validateCLIOptions.ts b/packages/jest-validate/src/validateCLIOptions.ts
index ea445fc932b8..ae71952eeefa 100644
--- a/packages/jest-validate/src/validateCLIOptions.ts
+++ b/packages/jest-validate/src/validateCLIOptions.ts
@@ -78,7 +78,7 @@ export default function validateCLIOptions(
   );
   const unrecognizedOptions = Object.keys(argv).filter(
     arg =>
-      !allowedOptions.has(camelcase(arg)) &&
+      !allowedOptions.has(camelcase(arg, {locale: 'en-US'})) &&
       !allowedOptions.has(arg) &&
       (!rawArgv.length || rawArgv.includes(arg)),
     [],
diff --git a/yarn.lock b/yarn.lock
index d5571f7a19df..a53c8341c1e9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2594,7 +2594,7 @@ __metadata:
     ansi-regex: ^5.0.0
     ansi-styles: ^5.0.0
     babel-plugin-replace-ts-export-assignment: ^0.0.2
-    camelcase: ^6.0.0
+    camelcase: ^6.2.0
     chalk: ^4.0.0
     chokidar: ^3.3.0
     codecov: ^3.0.0
@@ -13411,7 +13411,7 @@ fsevents@^1.2.7:
   dependencies:
     "@jest/types": ^27.0.0-next.8
     "@types/yargs": ^16.0.0
-    camelcase: ^6.0.0
+    camelcase: ^6.2.0
     chalk: ^4.0.0
     jest-get-type: ^27.0.0-next.9
     leven: ^3.1.0