diff --git a/src/_zkapauthorizer/storage_common.py b/src/_zkapauthorizer/storage_common.py
index 800f7f0aba9f736e6935bd38e80e6558ae7eb0eb..f00997b1c6db9b240eebd7dade935c5c6dc8e917 100644
--- a/src/_zkapauthorizer/storage_common.py
+++ b/src/_zkapauthorizer/storage_common.py
@@ -47,7 +47,7 @@ slot_testv_and_readv_and_writev_message = _message_maker(u"slot_testv_and_readv_
 
 # The number of bytes we're willing to store for a lease period for each pass
 # submitted.
-BYTES_PER_PASS = 128 * 1024
+BYTES_PER_PASS = 1024 * 1024
 
 def get_configured_pass_value(node_config):
     """