diff --git a/lib/active_storage/service/cellar_service.rb b/lib/active_storage/service/cellar_service.rb
index f704fcf49..43f2d0632 100644
--- a/lib/active_storage/service/cellar_service.rb
+++ b/lib/active_storage/service/cellar_service.rb
@@ -4,7 +4,7 @@ module ActiveStorage
       @adapter = Cellar::CellarAdapter.new(access_key_id, secret_access_key, bucket)
     end
 
-    def upload(key, io, checksum: nil)
+    def upload(key, io, checksum: nil, **)
       instrument :upload, key: key, checksum: checksum do
         @adapter.session { |s| s.upload(key, io, checksum) }
       end
diff --git a/lib/cellar/cellar_adapter.rb b/lib/cellar/cellar_adapter.rb
index 97369c2c5..1a1ed400c 100644
--- a/lib/cellar/cellar_adapter.rb
+++ b/lib/cellar/cellar_adapter.rb
@@ -34,7 +34,7 @@ module Cellar
         @signer = signer
       end
 
-      def upload(key, io, checksum: nil, **)
+      def upload(key, io, checksum)
         with_io_length(io) do |io, length|
           request = Net::HTTP::Put.new("/#{key}")
           request.content_type = 'application/octet-stream'