diff --git a/lib/gs.py b/lib/gs.py
index e844e20..b08e931 100644
--- a/lib/gs.py
+++ b/lib/gs.py
@@ -253,7 +253,7 @@
   # (1*sleep) the first time, then (2*sleep), continuing via attempt * sleep.
   DEFAULT_SLEEP_TIME = 60
 
-  GSUTIL_VERSION = '4.19'
+  GSUTIL_VERSION = '4.27'
   GSUTIL_TAR = 'gsutil_%s.tar.gz' % GSUTIL_VERSION
   GSUTIL_URL = (PUBLIC_BASE_HTTPS_URL +
                 'chromeos-mirror/gentoo/distfiles/%s' % GSUTIL_TAR)