diff --git a/CHANGELOG b/CHANGELOG
index a76e19a..ec69b5c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -5,6 +5,8 @@
 ## [0.40.0] UNRELEASED
 ### Added
 - Support for Python 3.11
+- Add the `--print-modified` flag to print out file names of modified files when
+  running in in-place mode.
 ### Removed
 - Support for Python <3.7
 
diff --git a/README.rst b/README.rst
index c4c56fb..8b6e781 100644
--- a/README.rst
+++ b/README.rst
@@ -116,6 +116,7 @@
       --no-local-style      don't search for local style definition
       -p, --parallel        run YAPF in parallel when formatting multiple
                             files. Requires concurrent.futures in Python 2.X
+      -m, --print-modified  print out file names of modified files
       -vv, --verbose        print out file names while processing
 
 
diff --git a/yapf/__init__.py b/yapf/__init__.py
index aa5c37b..ce183e9 100644
--- a/yapf/__init__.py
+++ b/yapf/__init__.py
@@ -145,7 +145,8 @@
       verify=args.verify,
       parallel=args.parallel,
       quiet=args.quiet,
-      verbose=args.verbose)
+      verbose=args.verbose,
+      print_modified=args.print_modified)
   return 1 if changed and (args.diff or args.quiet) else 0
 
 
@@ -175,7 +176,8 @@
                 verify=False,
                 parallel=False,
                 quiet=False,
-                verbose=False):
+                verbose=False,
+                print_modified=False):
   """Format a list of files.
 
   Arguments:
@@ -194,6 +196,7 @@
     parallel: (bool) True if should format multiple files in parallel.
     quiet: (bool) True if should output nothing.
     verbose: (bool) True if should print out filenames while processing.
+    print_modified: (bool) True if should print out filenames of modified files.
 
   Returns:
     True if the source code changed in any of the files being formatted.
@@ -207,14 +210,15 @@
       future_formats = [
           executor.submit(_FormatFile, filename, lines, style_config,
                           no_local_style, in_place, print_diff, verify, quiet,
-                          verbose) for filename in filenames
+                          verbose, print_modified) for filename in filenames
       ]
       for future in concurrent.futures.as_completed(future_formats):
         changed |= future.result()
   else:
     for filename in filenames:
       changed |= _FormatFile(filename, lines, style_config, no_local_style,
-                             in_place, print_diff, verify, quiet, verbose)
+                             in_place, print_diff, verify, quiet, verbose,
+                             print_modified)
   return changed
 
 
@@ -226,10 +230,11 @@
                 print_diff=False,
                 verify=False,
                 quiet=False,
-                verbose=False):
+                verbose=False,
+                print_modified=False):
   """Format an individual file."""
   if verbose and not quiet:
-    print('Reformatting %s' % filename)
+    print(f'Reformatting {filename}')
 
   if style_config is None and not no_local_style:
     style_config = file_resources.GetDefaultStyleForDir(
@@ -252,6 +257,8 @@
   if not in_place and not quiet and reformatted_code:
     file_resources.WriteReformattedCode(filename, reformatted_code, encoding,
                                         in_place)
+  if print_modified and has_change and in_place and not quiet:
+    print(f'Formatted {filename}')
   return has_change
 
 
@@ -359,6 +366,11 @@
       help=('run YAPF in parallel when formatting multiple files. Requires '
             'concurrent.futures in Python 2.X'))
   parser.add_argument(
+      '-m',
+      '--print-modified',
+      action='store_true',
+      help='print out file names of modified files')
+  parser.add_argument(
       '-vv',
       '--verbose',
       action='store_true',
diff --git a/yapftests/yapf_test.py b/yapftests/yapf_test.py
index 09659e7..7c241bd 100644
--- a/yapftests/yapf_test.py
+++ b/yapftests/yapf_test.py
@@ -505,6 +505,16 @@
         reformatted_code = fd.read()
     self.assertEqual(reformatted_code, expected_formatted_code)
 
+  def testPrintModified(self):
+    for unformatted_code, has_change in [('1==2', True), ('1 == 2', False)]:
+      with utils.TempFileContents(
+          self.test_tmpdir, unformatted_code, suffix='.py') as filepath:
+        output = subprocess.check_output(
+            YAPF_BINARY + ['--in-place', '--print-modified', filepath],
+            text=True)
+        check = self.assertIn if has_change else self.assertNotIn
+        check(f'Formatted {filepath}', output)
+
   def testReadFromStdin(self):
     unformatted_code = textwrap.dedent("""\
         def foo():