diff --git a/moto/s3/urls.py b/moto/s3/urls.py
index 4a1632bd5..f43e37982 100644
--- a/moto/s3/urls.py
+++ b/moto/s3/urls.py
@@ -1,6 +1,6 @@
 from .responses import all_buckets, bucket_response, key_response
 
-base_url = "https://(.*).s3.amazonaws.com"
+base_url = "https?://(.*).s3.amazonaws.com"
 
 urls = {
     'https://s3.amazonaws.com/$': all_buckets,