diff --git a/README.chromium b/README.chromium
index 898f0ea9b..af2cd69b5 100644
--- a/README.chromium
+++ b/README.chromium
@@ -1,6 +1,6 @@
 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 1404
+Version: 1405
 License: BSD
 License File: LICENSE
 
diff --git a/include/libyuv/version.h b/include/libyuv/version.h
index 70a787a12..d243daebd 100644
--- a/include/libyuv/version.h
+++ b/include/libyuv/version.h
@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 1404
+#define LIBYUV_VERSION 1405
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT
diff --git a/libyuv.gyp b/libyuv.gyp
index 935bc4c19..9bb883a8b 100644
--- a/libyuv.gyp
+++ b/libyuv.gyp
@@ -93,6 +93,9 @@
       'target_name': 'libyuv',
       # Change type to 'shared_library' to build .so or .dll files.
       'type': 'static_library',
+      'variables': {
+        'optimize': 'max',  # enable O2 and ltcg.
+      },
       # Allows libyuv.a redistributable library without external dependencies.
       'standalone_static_library': 1,
       'conditions': [