diff --git a/images/custom-error-pages/cloudbuild.yaml b/images/custom-error-pages/cloudbuild.yaml
index d80d2aeaf..9b913b3e6 100644
--- a/images/custom-error-pages/cloudbuild.yaml
+++ b/images/custom-error-pages/cloudbuild.yaml
@@ -1,4 +1,4 @@
-timeout: 600s
+timeout: 1800s
 options:
   substitution_option: ALLOW_LOOSE
 steps: