diff --git a/.gitignore b/.gitignore
index eb88934..b617bab 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,4 @@
 /pkg
 /tmp
 /coverage
+/Gemfile.lock
diff --git a/Gemfile b/Gemfile
index a9229d9..570bec0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ source "https://rubygems.org"
 # Specify your gem's dependencies in rubygems-generate_index.gemspec
 gemspec
 
-gem "rake", "~> 13.0"
+gem "rake", "~> 13.2"
 gem "rubocop", "~> 1.21"
 gem "rubocop-performance", "~> 1.19"
 gem "rubocop-rake", "~> 0.6.0"
diff --git a/Gemfile.lock b/Gemfile.lock
deleted file mode 100644
index b716271..0000000
--- a/Gemfile.lock
+++ /dev/null
@@ -1,69 +0,0 @@
-PATH
-  remote: .
-  specs:
-    rubygems-generate_index (1.1.3)
-      compact_index (~> 0.15.0)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    ast (2.4.2)
-    base64 (0.1.1)
-    builder (3.2.4)
-    compact_index (0.15.0)
-    json (2.6.3)
-    json (2.6.3-java)
-    language_server-protocol (3.17.0.3)
-    parallel (1.23.0)
-    parser (3.2.2.3)
-      ast (~> 2.4.1)
-      racc
-    power_assert (2.0.3)
-    racc (1.7.1)
-    racc (1.7.1-java)
-    rainbow (3.1.1)
-    rake (13.0.6)
-    regexp_parser (2.8.1)
-    rexml (3.3.9)
-    rubocop (1.56.3)
-      base64 (~> 0.1.1)
-      json (~> 2.3)
-      language_server-protocol (>= 3.17.0)
-      parallel (~> 1.10)
-      parser (>= 3.2.2.3)
-      rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 1.8, < 3.0)
-      rexml (>= 3.2.5, < 4.0)
-      rubocop-ast (>= 1.28.1, < 2.0)
-      ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 2.4.0, < 3.0)
-    rubocop-ast (1.29.0)
-      parser (>= 3.2.1.0)
-    rubocop-performance (1.19.1)
-      rubocop (>= 1.7.0, < 2.0)
-      rubocop-ast (>= 0.4.0)
-    rubocop-rake (0.6.0)
-      rubocop (~> 1.0)
-    ruby-progressbar (1.13.0)
-    test-unit (3.6.1)
-      power_assert
-    unicode-display_width (2.4.2)
-
-PLATFORMS
-  arm64-darwin
-  arm64-linux
-  java
-  ruby
-  x64-linux
-
-DEPENDENCIES
-  builder (~> 3.2)
-  rake (~> 13.0)
-  rubocop (~> 1.21)
-  rubocop-performance (~> 1.19)
-  rubocop-rake (~> 0.6.0)
-  rubygems-generate_index!
-  test-unit (~> 3.0)
-
-BUNDLED WITH
-   2.5.14
diff --git a/Manifest.txt b/Manifest.txt
index e1b3546..d915241 100644
--- a/Manifest.txt
+++ b/Manifest.txt
@@ -1,6 +1,5 @@
 CODE_OF_CONDUCT.md
 Gemfile
-Gemfile.lock
 LICENSE.txt
 MIT.txt
 Manifest.txt
diff --git a/test/rubygems/helper.rb b/test/rubygems/helper.rb
index 8126559..6c9be4c 100644
--- a/test/rubygems/helper.rb
+++ b/test/rubygems/helper.rb
@@ -19,7 +19,6 @@
 require "tmpdir"
 require "uri"
 require "zlib"
-require "benchmark" # stdlib
 require_relative "mock_gem_ui"
 
 module Gem