diff --git a/update_engine.gyp b/update_engine.gyp
index 0a40a51..7b0597a 100644
--- a/update_engine.gyp
+++ b/update_engine.gyp
@@ -160,6 +160,7 @@
         'common/certificate_checker.cc',
         'common/clock.cc',
         'common/constants.cc',
+        'common/cpu_limiter.cc',
         'common/hash_calculator.cc',
         'common/http_common.cc',
         'common/http_fetcher.cc',
@@ -470,6 +471,7 @@
             'common/action_processor_unittest.cc',
             'common/action_unittest.cc',
             'common/certificate_checker_unittest.cc',
+            'common/cpu_limiter_unittest.cc',
             'common/fake_prefs.cc',
             'common/hash_calculator_unittest.cc',
             'common/http_fetcher_unittest.cc',