diff --git a/cr-buildbucket.cfg b/cr-buildbucket.cfg
index c9787b3..ab8ed6d 100644
--- a/cr-buildbucket.cfg
+++ b/cr-buildbucket.cfg
@@ -59,7 +59,7 @@
     hostname: "chromium-swarm.appspot.com"
     builder_defaults {
       dimensions: "pool:luci.flex.ci"
-      execution_timeout_secs: 1800  # 30 minutes
+      execution_timeout_secs: 3600  # 60 minutes
       recipe {
         cipd_package: "infra/recipe_bundles/gn.googlesource.com/gn"
         cipd_version: "refs/heads/master"
@@ -101,7 +101,7 @@
     hostname: "chromium-swarm.appspot.com"
     builder_defaults {
       dimensions: "pool:luci.flex.try"
-      execution_timeout_secs: 1800  # 30 minutes
+      execution_timeout_secs: 3600  # 60 minutes
       recipe {
         cipd_package: "infra/recipe_bundles/gn.googlesource.com/gn"
         cipd_version: "refs/heads/master"