diff --git a/Gemfile b/Gemfile
index 1cae8a4..b060d5b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,10 +4,13 @@ ruby File.read('.ruby-version').strip
 
 gem 'berkeley_library-docker', '~> 0.1.1'
 gem 'chronic', '~> 0.10.2'
+gem 'logger'
 gem 'net-sftp'
 gem 'thor', '~> 1.1'
 
 group :test do
+  gem 'base64'
+  gem 'bigdecimal'
   gem 'colorize'
   gem 'rspec'
   gem 'rspec-its', '~> 1.3'
diff --git a/Gemfile.lock b/Gemfile.lock
index b64a6da..343fae7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,7 +4,9 @@ GEM
     addressable (2.9.0)
       public_suffix (>= 2.0.2, < 8.0)
     ast (2.4.3)
+    base64 (0.3.0)
     berkeley_library-docker (0.1.1)
+    bigdecimal (4.1.2)
     chronic (0.10.2)
     colorize (0.8.1)
     crack (0.4.5)
@@ -14,9 +16,10 @@ GEM
     json (2.20.0)
     language_server-protocol (3.17.0.5)
     lint_roller (1.1.0)
-    net-sftp (3.0.0)
-      net-ssh (>= 5.0.0, < 7.0.0)
-    net-ssh (6.1.0)
+    logger (1.7.0)
+    net-sftp (4.0.0)
+      net-ssh (>= 5.0.0, < 8.0.0)
+    net-ssh (7.3.3)
     parallel (2.1.0)
     parser (3.3.11.1)
       ast (~> 2.4.1)
@@ -79,9 +82,12 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
+  base64
   berkeley_library-docker (~> 0.1.1)
+  bigdecimal
   chronic (~> 0.10.2)
   colorize
+  logger
   net-sftp
   rspec
   rspec-its (~> 1.3)
diff --git a/lib/berkeley_library/sftp_handler/downloader/gobi.rb b/lib/berkeley_library/sftp_handler/downloader/gobi.rb
index d79e4e4..9317a9c 100644
--- a/lib/berkeley_library/sftp_handler/downloader/gobi.rb
+++ b/lib/berkeley_library/sftp_handler/downloader/gobi.rb
@@ -45,17 +45,6 @@ def default_host
         def default_username
           ENV.fetch('LIT_GOBI_USERNAME', nil)
         end
-
-        def ssh_options
-          super.tap do |opts|
-            # @note As of 04/28/22, Gobi's server only supports outdated Diffie-Hellman
-            #       key exchange algorithms, which you local sftp client will probably (and
-            #       correctly) refuse. If you want to test manually, then for now you must
-            #       explicitly allow the old algorithm by passing the following option to your
-            #       sftp client: `-oKexAlgorithms=+diffie-hellman-group1-sha1`.
-            opts[:append_all_supported_algorithms] = true
-          end
-        end
       end
     end
   end
diff --git a/spec/downloader/gobi_spec.rb b/spec/downloader/gobi_spec.rb
index d2c9cd3..57daeaa 100644
--- a/spec/downloader/gobi_spec.rb
+++ b/spec/downloader/gobi_spec.rb
@@ -6,7 +6,7 @@
   let(:now) { Time.new(2022, 5, 20, 0, 0, 0) }
 
   its(:default_host) { is_expected.to eq 'ftp.ybp.com' }
-  its(:ssh_options) { is_expected.to include(append_all_supported_algorithms: true) }
+  its(:ssh_options) { is_expected.not_to include(:append_all_supported_algorithms) }
 
   its(:default_filename) do
     Timecop.freeze(now) do
diff --git a/spec/downloader/lbnl_spec.rb b/spec/downloader/lbnl_spec.rb
index 2db32d3..b2d026f 100644
--- a/spec/downloader/lbnl_spec.rb
+++ b/spec/downloader/lbnl_spec.rb
@@ -5,6 +5,14 @@
 
 # rubocop:disable Metrics/BlockLength
 describe BerkeleyLibrary::SftpHandler::Downloader::Lbnl do
+  around do |example|
+    old_lbnl_filename = ENV.fetch('LBNL_FILENAME', nil)
+    ENV['LBNL_FILENAME'] = 'test'
+    example.run
+  ensure
+    old_lbnl_filename.nil? ? ENV.delete('LBNL_FILENAME') : ENV['LBNL_FILENAME'] = old_lbnl_filename
+  end
+
   its(:default_host) { is_expected.to eq 'ncc-1701.lbl.gov' }
 
   describe '#download!' do