diff --git a/cr-buildbucket.cfg b/cr-buildbucket.cfg
index 832b43be7..555c7953b 100644
--- a/cr-buildbucket.cfg
+++ b/cr-buildbucket.cfg
@@ -13,7 +13,7 @@ builder_mixins {
 
 builder_mixins {
   name: "linux"
-  dimensions: "os:Ubuntu-14.04"
+  dimensions: "os:Ubuntu-16.04"
   dimensions: "cores:8"
   dimensions: "cpu:x86-64"
 }