diff --git a/bin/pretty-quick.js b/bin/pretty-quick.js
index 04d6d5c..322fd4a 100755
--- a/bin/pretty-quick.js
+++ b/bin/pretty-quick.js
@@ -13,6 +13,8 @@ let success = true;
 prettyQuick(
   process.cwd(),
   Object.assign({}, args, {
+    matchers: args._,
+
     onFoundSinceRevision: (scm, revision) => {
       console.log(
         `🔍  Finding changed files since ${chalk.bold(
diff --git a/package.json b/package.json
index e8a247d..6d46a2e 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,8 @@
     "execa": "^0.8.0",
     "find-up": "^2.1.0",
     "ignore": "^3.3.7",
-    "mri": "^1.1.0"
+    "mri": "^1.1.0",
+    "multimatch": "3.0.0"
   },
   "scripts": {
     "prepublishOnly": "yarn build",
diff --git a/src/__tests__/scm-git.test.js b/src/__tests__/scm-git.test.js
index fafcf00..87288b4 100644
--- a/src/__tests__/scm-git.test.js
+++ b/src/__tests__/scm-git.test.js
@@ -158,6 +158,36 @@ describe('with git', () => {
 
     expect(onWriteFile).toHaveBeenCalledWith('./foo.js');
     expect(onWriteFile).toHaveBeenCalledWith('./bar.md');
+    expect(onWriteFile.mock.calls.length).toBe(2);
+  });
+
+  test('calls onWriteFile with changed files for the given pattern', () => {
+    const onWriteFile = jest.fn();
+    mockGitFs();
+    prettyQuick('root', { matchers: ['*.md'], since: 'banana', onWriteFile });
+    expect(onWriteFile.mock.calls).toEqual([['./bar.md']]);
+  });
+
+  test('calls onWriteFile with changed files for the given globstar pattern', () => {
+    const onWriteFile = jest.fn();
+    mockGitFs();
+    prettyQuick('root', {
+      matchers: ['**/*.md'],
+      since: 'banana',
+      onWriteFile,
+    });
+    expect(onWriteFile.mock.calls).toEqual([['./bar.md']]);
+  });
+
+  test('calls onWriteFile with changed files for the given extglob pattern', () => {
+    const onWriteFile = jest.fn();
+    mockGitFs();
+    prettyQuick('root', {
+      matchers: ['*.*(md|foo|bar)'],
+      since: 'banana',
+      onWriteFile,
+    });
+    expect(onWriteFile.mock.calls).toEqual([['./bar.md']]);
   });
 
   test('writes formatted files to disk', () => {
diff --git a/src/__tests__/scm-hg.test.js b/src/__tests__/scm-hg.test.js
index 10a50b9..a2ab46b 100644
--- a/src/__tests__/scm-hg.test.js
+++ b/src/__tests__/scm-hg.test.js
@@ -116,6 +116,35 @@ describe('with hg', () => {
     expect(onWriteFile).toHaveBeenCalledWith('./bar.md');
   });
 
+  test('calls onWriteFile with changed files for the given pattern', () => {
+    const onWriteFile = jest.fn();
+    mockHgFs();
+    prettyQuick('root', { matchers: ['*.md'], since: 'banana', onWriteFile });
+    expect(onWriteFile.mock.calls).toEqual([['./bar.md']]);
+  });
+
+  test('calls onWriteFile with changed files for the given globstar pattern', () => {
+    const onWriteFile = jest.fn();
+    mockHgFs();
+    prettyQuick('root', {
+      matchers: ['**/*.md'],
+      since: 'banana',
+      onWriteFile,
+    });
+    expect(onWriteFile.mock.calls).toEqual([['./bar.md']]);
+  });
+
+  test('calls onWriteFile with changed files for the given extglob pattern', () => {
+    const onWriteFile = jest.fn();
+    mockHgFs();
+    prettyQuick('root', {
+      matchers: ['*.*(md|foo|bar)'],
+      since: 'banana',
+      onWriteFile,
+    });
+    expect(onWriteFile.mock.calls).toEqual([['./bar.md']]);
+  });
+
   test('writes formatted files to disk', () => {
     const onWriteFile = jest.fn();
 
diff --git a/src/createMatcher.js b/src/createMatcher.js
new file mode 100644
index 0000000..ef3a930
--- /dev/null
+++ b/src/createMatcher.js
@@ -0,0 +1,11 @@
+import multimatch from 'multimatch';
+import path from 'path';
+
+export default patterns => {
+  if (patterns.length === 0) {
+    return () => true;
+  }
+  return file => {
+    return multimatch(path.normalize(file), patterns).length !== 0;
+  };
+};
diff --git a/src/index.js b/src/index.js
index 280c831..d4c1ba7 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,6 +1,7 @@
 import scms from './scms';
 import formatFiles from './formatFiles';
 import createIgnorer from './createIgnorer';
+import createMatcher from './createMatcher';
 import isSupportedExtension from './isSupportedExtension';
 
 export default (
@@ -9,6 +10,7 @@ export default (
     config,
     since,
     staged,
+    matchers = [],
     restage = true,
     branch,
     verbose,
@@ -38,6 +40,7 @@ export default (
   const changedFiles = scm
     .getChangedFiles(directory, revision, staged)
     .filter(isSupportedExtension)
+    .filter(createMatcher(matchers))
     .filter(rootIgnorer)
     .filter(cwdIgnorer);
 
@@ -45,6 +48,7 @@ export default (
     ? scm
         .getUnstagedChangedFiles(directory, revision)
         .filter(isSupportedExtension)
+        .filter(createMatcher(matchers))
         .filter(rootIgnorer)
         .filter(cwdIgnorer)
     : [];
diff --git a/yarn.lock b/yarn.lock
index 3e3b3c9..9de4ea2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3130,6 +3130,16 @@ ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
+multimatch@3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/multimatch/-/multimatch-3.0.0.tgz#0e2534cc6bc238d9ab67e1b9cd5fcd85a6dbf70b"
+  integrity sha512-22foS/gqQfANZ3o+W7ST2x25ueHDVNWl/b9OlGcLpy/iKxjCpvcNCM51YCenUi7Mt/jAjjqv8JwZRs8YP5sRjA==
+  dependencies:
+    array-differ "^2.0.3"
+    array-union "^1.0.2"
+    arrify "^1.0.1"
+    minimatch "^3.0.4"
+
 mute-stream@0.0.7:
   version "0.0.7"
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.7.tgz#3075ce93bc21b8fab43e1bc4da7e8115ed1e7bab"