diff --git a/deploy/stacks/pipeline.py b/deploy/stacks/pipeline.py
index add56e890..427a117c5 100644
--- a/deploy/stacks/pipeline.py
+++ b/deploy/stacks/pipeline.py
@@ -738,6 +738,7 @@ def set_approval_tests_stage(
                 role=self.expanded_codebuild_role.without_policy_updates(),
                 vpc=self.vpc,
                 security_groups=[self.codebuild_sg],
+                timeout=Duration.hours(4),
             )
         )