diff --git a/docs/user-guide/usage/options.md b/docs/user-guide/usage/options.md
index 348bf39699..cc19c9e67b 100644
--- a/docs/user-guide/usage/options.md
+++ b/docs/user-guide/usage/options.md
@@ -187,3 +187,9 @@ CLI flag: `--stdin-filename`
 A filename to assign the input.
 
 If using `code` or `stdin` to pass a source string directly, you can use `codeFilename` to associate that code with a particular filename.
+
+## `quiet`
+
+CLI flag: `--quiet`
+
+Only register violations for rules with an "error"-level severity (ignore "warning"-level).
diff --git a/lib/__tests__/cli.test.js b/lib/__tests__/cli.test.js
index 7ba07ac993..263cc1b015 100644
--- a/lib/__tests__/cli.test.js
+++ b/lib/__tests__/cli.test.js
@@ -320,4 +320,17 @@ describe('CLI', () => {
 			'Max warnings exceeded: 1 found. 0 allowed',
 		);
 	});
+
+	it('--quiet', async () => {
+		await cli([
+			'--quiet',
+			'--config',
+			fixturesPath('default-severity-warning.json'),
+			fixturesPath('empty-block.css'),
+		]);
+
+		expect(process.exitCode).toEqual(2);
+
+		expect(process.stdout.write).toHaveBeenCalledTimes(0);
+	});
 });