diff --git a/lib/src/tasks/format/api.dart b/lib/src/tasks/format/api.dart
index 9353498f..f746b75f 100644
--- a/lib/src/tasks/format/api.dart
+++ b/lib/src/tasks/format/api.dart
@@ -62,6 +62,8 @@ FormatTask format(
         if (!entity.path.endsWith('.dart')) continue;
         // Skip dependency files.
         if (entity.absolute.path.contains('/packages/')) continue;
+        // Skip contents of .pub directories.
+        if (entity.absolute.path.contains('/.pub/')) continue;
 
         // Skip excluded files.
         bool isExcluded = false;
diff --git a/test/integration/format_test.dart b/test/integration/format_test.dart
index c31901eb..fa499351 100644
--- a/test/integration/format_test.dart
+++ b/test/integration/format_test.dart
@@ -98,5 +98,21 @@ void main() {
       String contentsAfter = file.readAsStringSync();
       expect(contentsBefore, equals(contentsAfter));
     });
+
+    test('should skip files in "packages" when excludes specified', () async {
+      File file = new File('$projectWithExclusions/lib/packages/main.dart');
+      String contentsBefore = file.readAsStringSync();
+      expect(await formatProject(projectWithExclusions), isTrue);
+      String contentsAfter = file.readAsStringSync();
+      expect(contentsBefore, equals(contentsAfter));
+    });
+
+    test('should skip files in ".pub" when excludes specified', () async {
+      File file = new File('$projectWithExclusions/lib/.pub/main.dart');
+      String contentsBefore = file.readAsStringSync();
+      expect(await formatProject(projectWithExclusions), isTrue);
+      String contentsAfter = file.readAsStringSync();
+      expect(contentsBefore, equals(contentsAfter));
+    });
   });
 }
diff --git a/test_fixtures/format/exclusions/lib/.pub/main.dart b/test_fixtures/format/exclusions/lib/.pub/main.dart
new file mode 100644
index 00000000..e3c09c64
--- /dev/null
+++ b/test_fixtures/format/exclusions/lib/.pub/main.dart
@@ -0,0 +1,9 @@
+library main;
+
+List longList = ['one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine', 'ten'];
+
+void doStuff(
+  content
+  )   {
+      print( content );
+}
diff --git a/test_fixtures/format/exclusions/lib/packages/main.dart b/test_fixtures/format/exclusions/lib/packages/main.dart
new file mode 100644
index 00000000..e3c09c64
--- /dev/null
+++ b/test_fixtures/format/exclusions/lib/packages/main.dart
@@ -0,0 +1,9 @@
+library main;
+
+List longList = ['one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine', 'ten'];
+
+void doStuff(
+  content
+  )   {
+      print( content );
+}