diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1953f9889dd0..954c926b427e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -113,8 +113,9 @@
 - `[docs]` Remove duplicate code in `MockFunctions` ([#7297](https://github.com/facebook/jest/pull/7297))
 - `[*]` Add check for Facebook copyright headers on CI ([#7370](https://github.com/facebook/jest/pull/7370))
 - `[jest-haste-map]` Refactor `dependencyExtractor` and tests ([#7385](https://github.com/facebook/jest/pull/7385))
+- `[docs]` Clearify conditional setting of `NODE_ENV` ([#7369](https://github.com/facebook/jest/pull/7369))
 - `[docs]` Clarify conditional setting of `NODE_ENV` ([#7369](https://github.com/facebook/jest/pull/7369))
-- `[*]` Standardize file names ([#7316](https://github.com/facebook/jest/pull/7316), [#7266](https://github.com/facebook/jest/pull/7266), [#7238](https://github.com/facebook/jest/pull/7238), [#7314](https://github.com/facebook/jest/pull/7314), [#7467](https://github.com/facebook/jest/pull/7467))
+- `[*]` Standardize file names ([#7316](https://github.com/facebook/jest/pull/7316), [#7266](https://github.com/facebook/jest/pull/7266), [#7238](https://github.com/facebook/jest/pull/7238), [#7314](https://github.com/facebook/jest/pull/7314), [#7467](https://github.com/facebook/jest/pull/7467), [#7464](https://github.com/facebook/jest/pull/7464))
 - `[docs]` Add `testPathIgnorePatterns` in CLI documentation ([#7440](https://github.com/facebook/jest/pull/7440))
 
 ### Performance
diff --git a/packages/jest-runner/src/__tests__/test_runner.test.js b/packages/jest-runner/src/__tests__/testRunner.test.js
similarity index 98%
rename from packages/jest-runner/src/__tests__/test_runner.test.js
rename to packages/jest-runner/src/__tests__/testRunner.test.js
index 94ae275e4aa3..c144f4cad0aa 100644
--- a/packages/jest-runner/src/__tests__/test_runner.test.js
+++ b/packages/jest-runner/src/__tests__/testRunner.test.js
@@ -25,7 +25,7 @@ jest.mock('jest-worker', () =>
   ),
 );
 
-jest.mock('../test_worker', () => {});
+jest.mock('../testWorker', () => {});
 
 test('injects the serializable module map into each worker in watch mode', () => {
   const globalConfig = {maxWorkers: 2, watch: true};
diff --git a/packages/jest-runner/src/index.js b/packages/jest-runner/src/index.js
index aa4c55e40b96..be967a47fa2a 100644
--- a/packages/jest-runner/src/index.js
+++ b/packages/jest-runner/src/index.js
@@ -17,14 +17,14 @@ import type {
   TestWatcher,
 } from 'types/TestRunner';
 
-import typeof {worker} from './test_worker';
+import typeof {worker} from './testWorker';
 
 import exit from 'exit';
-import runTest from './run_test';
+import runTest from './runTest';
 import throat from 'throat';
 import Worker from 'jest-worker';
 
-const TEST_WORKER_PATH = require.resolve('./test_worker');
+const TEST_WORKER_PATH = require.resolve('./testWorker');
 
 type WorkerInterface = Worker & {worker: worker};
 
diff --git a/packages/jest-runner/src/run_test.js b/packages/jest-runner/src/runTest.js
similarity index 100%
rename from packages/jest-runner/src/run_test.js
rename to packages/jest-runner/src/runTest.js
diff --git a/packages/jest-runner/src/test_worker.js b/packages/jest-runner/src/testWorker.js
similarity index 98%
rename from packages/jest-runner/src/test_worker.js
rename to packages/jest-runner/src/testWorker.js
index 5cca559c8fe9..462fd827ac80 100644
--- a/packages/jest-runner/src/test_worker.js
+++ b/packages/jest-runner/src/testWorker.js
@@ -16,7 +16,7 @@ import exit from 'exit';
 import HasteMap from 'jest-haste-map';
 import {separateMessageFromStack} from 'jest-message-util';
 import Runtime from 'jest-runtime';
-import runTest from './run_test';
+import runTest from './runTest';
 
 export type WorkerData = {|
   config: ProjectConfig,