diff --git a/update_engine.gyp b/update_engine.gyp
index 24a9a98..c201b65 100644
--- a/update_engine.gyp
+++ b/update_engine.gyp
@@ -164,10 +164,11 @@
         'payload_generator/full_update_generator.cc',
         'payload_generator/graph_utils.cc',
         'payload_generator/metadata.cc',
+        'payload_generator/payload_signer.cc',
         'payload_generator/tarjan.cc',
         'payload_generator/topological_sort.cc',
-        'payload_signer.cc',
         'payload_state.cc',
+        'payload_verifier.cc',
         'postinstall_runner_action.cc',
         'prefs.cc',
         'proxy_resolver.cc',
@@ -293,9 +294,9 @@
             'payload_generator/full_update_generator_unittest.cc',
             'payload_generator/graph_utils_unittest.cc',
             'payload_generator/metadata_unittest.cc',
+            'payload_generator/payload_signer_unittest.cc',
             'payload_generator/tarjan_unittest.cc',
             'payload_generator/topological_sort_unittest.cc',
-            'payload_signer_unittest.cc',
             'payload_state_unittest.cc',
             'postinstall_runner_action_unittest.cc',
             'prefs_unittest.cc',