diff --git a/release/ray_release/byod/build.py b/release/ray_release/byod/build.py
index fe21de9b4166c..989a24b793d77 100644
--- a/release/ray_release/byod/build.py
+++ b/release/ray_release/byod/build.py
@@ -203,7 +203,7 @@ def _byod_image_exist(test: Test, base_image: bool = True) -> bool:
     """
     if os.environ.get("BYOD_NO_CACHE", False):
         return False
-    client = boto3.client("ecr")
+    client = boto3.client("ecr", region_name="us-west-2")
     image_tag = (
         test.get_byod_base_image_tag() if base_image else test.get_byod_image_tag()
     )