diff --git a/.rubocop.yml b/.rubocop.yml
index 370a448f8042..da42fcc1bbca 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -73,6 +73,9 @@ Layout/LeadingEmptyLines:
 Layout/SpaceAroundOperators:
   Enabled: true
 
+Layout/SpaceBeforeBlockBraces:
+  Enabled: true
+
 Layout/SpaceInsideBlockBraces:
   Enabled: true
   SpaceBeforeBlockParameters: false
diff --git a/.rubocop_bundler.yml b/.rubocop_bundler.yml
index 55c060ded05d..4f716b7f293e 100644
--- a/.rubocop_bundler.yml
+++ b/.rubocop_bundler.yml
@@ -373,6 +373,9 @@ Layout/SpaceInsideArrayLiteralBrackets:
 Layout/SpaceInsideArrayPercentLiteral:
   Enabled: true
 
+Layout/SpaceBeforeBlockBraces:
+  Enabled: true
+
 Layout/SpaceInsideBlockBraces:
   Enabled: true
   SpaceBeforeBlockParameters: false
diff --git a/bundler/lib/bundler/cli/common.rb b/bundler/lib/bundler/cli/common.rb
index 1a469f1d3496..b547619c6af2 100644
--- a/bundler/lib/bundler/cli/common.rb
+++ b/bundler/lib/bundler/cli/common.rb
@@ -40,7 +40,7 @@ def self.without_groups_message(command)
     end
 
     def self.verbalize_groups(groups)
-      groups.map!{|g| "'#{g}'" }
+      groups.map! {|g| "'#{g}'" }
       group_list = [groups[0...-1].join(", "), groups[-1..-1]].
         reject {|s| s.to_s.empty? }.join(" and ")
       group_str = groups.size == 1 ? "group" : "groups"
diff --git a/bundler/lib/bundler/definition.rb b/bundler/lib/bundler/definition.rb
index d862877c2e4b..4fca763bcce5 100644
--- a/bundler/lib/bundler/definition.rb
+++ b/bundler/lib/bundler/definition.rb
@@ -261,7 +261,7 @@ def resolve
           @locked_specs
         elsif !unlocking? && nothing_changed?
           Bundler.ui.debug("Found no changes, using resolution from the lockfile")
-          SpecSet.new(filter_specs(@locked_specs, @dependencies.select{|dep| @locked_specs[dep].any? }))
+          SpecSet.new(filter_specs(@locked_specs, @dependencies.select {|dep| @locked_specs[dep].any? }))
         else
           last_resolve = converge_locked_specs
           # Run a resolve against the locally available gems
@@ -731,7 +731,7 @@ def converge_specs(specs)
         end
       end
 
-      SpecSet.new(filter_specs(converged, deps).reject{|s| @unlock[:gems].include?(s.name) })
+      SpecSet.new(filter_specs(converged, deps).reject {|s| @unlock[:gems].include?(s.name) })
     end
 
     def metadata_dependencies
diff --git a/bundler/lib/bundler/dsl.rb b/bundler/lib/bundler/dsl.rb
index f7922b1fba01..8983ef3e2baa 100644
--- a/bundler/lib/bundler/dsl.rb
+++ b/bundler/lib/bundler/dsl.rb
@@ -46,7 +46,7 @@ def eval_gemfile(gemfile, contents = nil)
       @gemfile = expanded_gemfile_path
       @gemfiles << expanded_gemfile_path
       contents ||= Bundler.read_file(@gemfile.to_s)
-      instance_eval(contents.dup.tap{|x| x.untaint if RUBY_VERSION < "2.7" }, gemfile.to_s, 1)
+      instance_eval(contents.dup.tap {|x| x.untaint if RUBY_VERSION < "2.7" }, gemfile.to_s, 1)
     rescue Exception => e # rubocop:disable Lint/RescueException
       message = "There was an error " \
         "#{e.is_a?(GemfileEvalError) ? "evaluating" : "parsing"} " \
diff --git a/bundler/lib/bundler/gem_helpers.rb b/bundler/lib/bundler/gem_helpers.rb
index b271b8d22922..632698482f39 100644
--- a/bundler/lib/bundler/gem_helpers.rb
+++ b/bundler/lib/bundler/gem_helpers.rb
@@ -48,7 +48,7 @@ def select_best_platform_match(specs, platform)
       sorted_matching = matching.sort_by {|spec| platform_specificity_match(spec.platform, platform) }
       exemplary_spec = sorted_matching.first
 
-      sorted_matching.take_while{|spec| same_specificity(platform, spec, exemplary_spec) && same_deps(spec, exemplary_spec) }
+      sorted_matching.take_while {|spec| same_specificity(platform, spec, exemplary_spec) && same_deps(spec, exemplary_spec) }
     end
     module_function :select_best_platform_match
 
diff --git a/bundler/lib/bundler/resolver.rb b/bundler/lib/bundler/resolver.rb
index 433a5e53e1e6..2285114c5708 100644
--- a/bundler/lib/bundler/resolver.rb
+++ b/bundler/lib/bundler/resolver.rb
@@ -21,7 +21,7 @@ def self.resolve(requirements, source_requirements = {}, base = [], gem_version_
       base = SpecSet.new(base) unless base.is_a?(SpecSet)
       resolver = new(source_requirements, base, gem_version_promoter, additional_base_requirements, platforms)
       result = resolver.start(requirements)
-      SpecSet.new(SpecSet.new(result).for(requirements.reject{|dep| dep.name.end_with?("\0") }))
+      SpecSet.new(SpecSet.new(result).for(requirements.reject {|dep| dep.name.end_with?("\0") }))
     end
 
     def initialize(source_requirements, base, gem_version_promoter, additional_base_requirements, platforms)
diff --git a/bundler/lib/bundler/rubygems_ext.rb b/bundler/lib/bundler/rubygems_ext.rb
index b0e35e005ea2..af669d7d0bbc 100644
--- a/bundler/lib/bundler/rubygems_ext.rb
+++ b/bundler/lib/bundler/rubygems_ext.rb
@@ -34,7 +34,7 @@ def source
 
     def full_gem_path
       if source.respond_to?(:root)
-        Pathname.new(loaded_from).dirname.expand_path(source.root).to_s.tap{|x| x.untaint if RUBY_VERSION < "2.7" }
+        Pathname.new(loaded_from).dirname.expand_path(source.root).to_s.tap {|x| x.untaint if RUBY_VERSION < "2.7" }
       else
         rg_full_gem_path
       end
diff --git a/bundler/lib/bundler/shared_helpers.rb b/bundler/lib/bundler/shared_helpers.rb
index ffdbdee5034e..8c4e26f074ec 100644
--- a/bundler/lib/bundler/shared_helpers.rb
+++ b/bundler/lib/bundler/shared_helpers.rb
@@ -13,13 +13,13 @@ module SharedHelpers
     def root
       gemfile = find_gemfile
       raise GemfileNotFound, "Could not locate Gemfile" unless gemfile
-      Pathname.new(gemfile).tap{|x| x.untaint if RUBY_VERSION < "2.7" }.expand_path.parent
+      Pathname.new(gemfile).tap {|x| x.untaint if RUBY_VERSION < "2.7" }.expand_path.parent
     end
 
     def default_gemfile
       gemfile = find_gemfile
       raise GemfileNotFound, "Could not locate Gemfile" unless gemfile
-      Pathname.new(gemfile).tap{|x| x.untaint if RUBY_VERSION < "2.7" }.expand_path
+      Pathname.new(gemfile).tap {|x| x.untaint if RUBY_VERSION < "2.7" }.expand_path
     end
 
     def default_lockfile
@@ -28,7 +28,7 @@ def default_lockfile
       case gemfile.basename.to_s
       when "gems.rb" then Pathname.new(gemfile.sub(/.rb$/, ".locked"))
       else Pathname.new("#{gemfile}.lock")
-      end.tap{|x| x.untaint if RUBY_VERSION < "2.7" }
+      end.tap {|x| x.untaint if RUBY_VERSION < "2.7" }
     end
 
     def default_bundle_dir
@@ -100,7 +100,7 @@ def set_bundle_environment
     #
     # @see {Bundler::PermissionError}
     def filesystem_access(path, action = :write, &block)
-      yield(path.dup.tap{|x| x.untaint if RUBY_VERSION < "2.7" })
+      yield(path.dup.tap {|x| x.untaint if RUBY_VERSION < "2.7" })
     rescue Errno::EACCES
       raise PermissionError.new(path, action)
     rescue Errno::EAGAIN
@@ -236,7 +236,7 @@ def find_directory(*names)
 
     def search_up(*names)
       previous = nil
-      current  = File.expand_path(SharedHelpers.pwd).tap{|x| x.untaint if RUBY_VERSION < "2.7" }
+      current  = File.expand_path(SharedHelpers.pwd).tap {|x| x.untaint if RUBY_VERSION < "2.7" }
 
       until !File.directory?(current) || current == previous
         if ENV["BUNDLER_SPEC_RUN"]
diff --git a/bundler/lib/bundler/source/git.rb b/bundler/lib/bundler/source/git.rb
index f1741207063d..eb82544b8608 100644
--- a/bundler/lib/bundler/source/git.rb
+++ b/bundler/lib/bundler/source/git.rb
@@ -336,7 +336,7 @@ def validate_spec(_spec); end
 
       def load_gemspec(file)
         stub = Gem::StubSpecification.gemspec_stub(file, install_path.parent, install_path.parent)
-        stub.full_gem_path = Pathname.new(file).dirname.expand_path(root).to_s.tap{|x| x.untaint if RUBY_VERSION < "2.7" }
+        stub.full_gem_path = Pathname.new(file).dirname.expand_path(root).to_s.tap {|x| x.untaint if RUBY_VERSION < "2.7" }
         StubSpecification.from_stub(stub)
       end
 
diff --git a/bundler/lib/bundler/spec_set.rb b/bundler/lib/bundler/spec_set.rb
index a19d18388ab8..352656aa7acd 100644
--- a/bundler/lib/bundler/spec_set.rb
+++ b/bundler/lib/bundler/spec_set.rb
@@ -18,7 +18,7 @@ def for(dependencies, check = false, match_current_platform = false)
 
       loop do
         break unless dep = deps.shift
-        next if handled.any?{|d| d.name == dep.name && (match_current_platform || d.__platform == dep.__platform) } || dep.name == "bundler"
+        next if handled.any? {|d| d.name == dep.name && (match_current_platform || d.__platform == dep.__platform) } || dep.name == "bundler"
 
         handled << dep
 
@@ -172,7 +172,7 @@ def tsort_each_node
     def spec_for_dependency(dep, match_current_platform)
       specs_for_platforms = lookup[dep.name]
       if match_current_platform
-        GemHelpers.select_best_platform_match(specs_for_platforms.select{|s| Gem::Platform.match_spec?(s) }, Bundler.local_platform)
+        GemHelpers.select_best_platform_match(specs_for_platforms.select {|s| Gem::Platform.match_spec?(s) }, Bundler.local_platform)
       else
         GemHelpers.select_best_platform_match(specs_for_platforms, dep.__platform)
       end
diff --git a/bundler/spec/runtime/inline_spec.rb b/bundler/spec/runtime/inline_spec.rb
index 9029c9b854e3..dd22c86f9045 100644
--- a/bundler/spec/runtime/inline_spec.rb
+++ b/bundler/spec/runtime/inline_spec.rb
@@ -89,7 +89,7 @@ def script(code, options = {})
 
     expect(out).to include("Installing activesupport")
     err_lines = err.split("\n")
-    err_lines.reject!{|line| line =~ /\.rb:\d+: warning: / } unless RUBY_VERSION < "2.7"
+    err_lines.reject! {|line| line =~ /\.rb:\d+: warning: / } unless RUBY_VERSION < "2.7"
     expect(err_lines).to be_empty
   end
 
diff --git a/bundler/spec/support/rubygems_ext.rb b/bundler/spec/support/rubygems_ext.rb
index d7f5d33fe9af..eb7e3210804d 100644
--- a/bundler/spec/support/rubygems_ext.rb
+++ b/bundler/spec/support/rubygems_ext.rb
@@ -119,7 +119,7 @@ def gem_activate_and_possibly_install(gem_name)
 
     def gem_activate(gem_name)
       require "bundler"
-      gem_requirement = Bundler::LockfileParser.new(File.read(dev_lockfile)).specs.find{|spec| spec.name == gem_name }.version
+      gem_requirement = Bundler::LockfileParser.new(File.read(dev_lockfile)).specs.find {|spec| spec.name == gem_name }.version
       gem gem_name, gem_requirement
     end
 
diff --git a/lib/rubygems.rb b/lib/rubygems.rb
index 137c08610b7a..e46dac0fd7d6 100644
--- a/lib/rubygems.rb
+++ b/lib/rubygems.rb
@@ -117,7 +117,7 @@ module Gem
   # Taint support is deprecated in Ruby 2.7.
   # This allows switching ".untaint" to ".tap(&Gem::UNTAINT)",
   # to avoid deprecation warnings in Ruby 2.7.
-  UNTAINT = RUBY_VERSION < '2.7' ? :untaint.to_sym : proc{}
+  UNTAINT = RUBY_VERSION < '2.7' ? :untaint.to_sym : proc {}
 
   # When https://bugs.ruby-lang.org/issues/17259 is available, there is no need to override Kernel#warn
   KERNEL_WARN_IGNORES_INTERNAL_ENTRIES = RUBY_ENGINE == "truffleruby" ||
diff --git a/lib/rubygems/commands/pristine_command.rb b/lib/rubygems/commands/pristine_command.rb
index 3cf496ba5b85..030c1bffcea0 100644
--- a/lib/rubygems/commands/pristine_command.rb
+++ b/lib/rubygems/commands/pristine_command.rb
@@ -113,7 +113,7 @@ def execute
       end.flatten
     end
 
-    specs = specs.select{|spec| RUBY_ENGINE == spec.platform || Gem::Platform.local === spec.platform || spec.platform == Gem::Platform::RUBY }
+    specs = specs.select {|spec| RUBY_ENGINE == spec.platform || Gem::Platform.local === spec.platform || spec.platform == Gem::Platform::RUBY }
 
     if specs.to_a.empty?
       raise Gem::Exception,
diff --git a/lib/rubygems/commands/setup_command.rb b/lib/rubygems/commands/setup_command.rb
index 7b6890013c20..84e9210cfb50 100644
--- a/lib/rubygems/commands/setup_command.rb
+++ b/lib/rubygems/commands/setup_command.rb
@@ -475,7 +475,7 @@ def generate_default_dirs
   def files_in(dir)
     Dir.chdir dir do
       Dir.glob(File.join('**', '*'), File::FNM_DOTMATCH).
-        select{|f| !File.directory?(f) }
+        select {|f| !File.directory?(f) }
     end
   end
 
diff --git a/lib/rubygems/commands/specification_command.rb b/lib/rubygems/commands/specification_command.rb
index 6f247879622d..6fba3a36ece4 100644
--- a/lib/rubygems/commands/specification_command.rb
+++ b/lib/rubygems/commands/specification_command.rb
@@ -129,7 +129,7 @@ def execute
     platform = get_platform_from_requirements(options)
 
     if platform
-      specs = specs.select{|s| s.platform.to_s == platform }
+      specs = specs.select {|s| s.platform.to_s == platform }
     end
 
     unless options[:all]
diff --git a/lib/rubygems/installer.rb b/lib/rubygems/installer.rb
index 5c1674f2e8fd..061339989071 100644
--- a/lib/rubygems/installer.rb
+++ b/lib/rubygems/installer.rb
@@ -725,11 +725,11 @@ def verify_spec
       raise Gem::InstallError, "#{spec} has an invalid name"
     end
 
-    if spec.raw_require_paths.any?{|path| path =~ /\R/ }
+    if spec.raw_require_paths.any? {|path| path =~ /\R/ }
       raise Gem::InstallError, "#{spec} has an invalid require_paths"
     end
 
-    if spec.extensions.any?{|ext| ext =~ /\R/ }
+    if spec.extensions.any? {|ext| ext =~ /\R/ }
       raise Gem::InstallError, "#{spec} has an invalid extensions"
     end
 
diff --git a/lib/rubygems/local_remote_options.rb b/lib/rubygems/local_remote_options.rb
index 0b8b0ee1a60c..9811c8f9484d 100644
--- a/lib/rubygems/local_remote_options.rb
+++ b/lib/rubygems/local_remote_options.rb
@@ -26,7 +26,7 @@ def accept_uri_http
 
       valid_uri_schemes = ["http", "https", "file", "s3"]
       unless valid_uri_schemes.include?(uri.scheme)
-        msg = "Invalid uri scheme for #{value}\nPreface URLs with one of #{valid_uri_schemes.map{|s| "#{s}://" }}"
+        msg = "Invalid uri scheme for #{value}\nPreface URLs with one of #{valid_uri_schemes.map {|s| "#{s}://" }}"
         raise ArgumentError, msg
       end
 
diff --git a/lib/rubygems/query_utils.rb b/lib/rubygems/query_utils.rb
index f4cfea308770..e0c71c43cbef 100644
--- a/lib/rubygems/query_utils.rb
+++ b/lib/rubygems/query_utils.rb
@@ -61,7 +61,7 @@ def execute
     gem_names = if args.empty?
       [options[:name]]
     else
-      options[:exact] ? args.map{|arg| /\A#{Regexp.escape(arg)}\Z/ } : args.map{|arg| /#{arg}/i }
+      options[:exact] ? args.map {|arg| /\A#{Regexp.escape(arg)}\Z/ } : args.map {|arg| /#{arg}/i }
     end
 
     terminate_interaction(check_installed_gems(gem_names)) if check_installed_gems?
diff --git a/lib/rubygems/spec_fetcher.rb b/lib/rubygems/spec_fetcher.rb
index 15bfbb6f8d29..4033e2efa325 100644
--- a/lib/rubygems/spec_fetcher.rb
+++ b/lib/rubygems/spec_fetcher.rb
@@ -91,8 +91,8 @@ def search_for_dependency(dependency, matching_platform=true)
 
     list.each do |source, specs|
       if dependency.name.is_a?(String) && specs.respond_to?(:bsearch)
-        start_index = (0 ... specs.length).bsearch{|i| specs[i].name >= dependency.name }
-        end_index   = (0 ... specs.length).bsearch{|i| specs[i].name > dependency.name }
+        start_index = (0 ... specs.length).bsearch {|i| specs[i].name >= dependency.name }
+        end_index   = (0 ... specs.length).bsearch {|i| specs[i].name > dependency.name }
         specs = specs[start_index ... end_index] if start_index && end_index
       end
 
diff --git a/lib/rubygems/specification.rb b/lib/rubygems/specification.rb
index 7e7599f7dbf9..9b533caf54bf 100644
--- a/lib/rubygems/specification.rb
+++ b/lib/rubygems/specification.rb
@@ -1110,7 +1110,7 @@ def self._latest_specs(specs, prerelease = false) # :nodoc:
       result[spec.name] = spec
     end
 
-    result.map(&:last).flatten.sort_by{|tup| tup.name }
+    result.map(&:last).flatten.sort_by {|tup| tup.name }
   end
 
   ##
diff --git a/test/rubygems/helper.rb b/test/rubygems/helper.rb
index 4460df8319f5..a0b2c985055a 100644
--- a/test/rubygems/helper.rb
+++ b/test/rubygems/helper.rb
@@ -1294,7 +1294,7 @@ def ruby_with_rubygems_in_load_path
   end
 
   def rubygems_path
-    $LOAD_PATH.find{|p| p == File.dirname($LOADED_FEATURES.find{|f| f.end_with?("/rubygems.rb") }) }
+    $LOAD_PATH.find {|p| p == File.dirname($LOADED_FEATURES.find {|f| f.end_with?("/rubygems.rb") }) }
   end
 
   def with_clean_path_to_ruby
diff --git a/test/rubygems/package/tar_test_case.rb b/test/rubygems/package/tar_test_case.rb
index 99f503a23f13..4517f407303e 100644
--- a/test/rubygems/package/tar_test_case.rb
+++ b/test/rubygems/package/tar_test_case.rb
@@ -67,7 +67,7 @@ def assert_headers_equal(expected, actual)
   end
 
   def calc_checksum(header)
-    sum = header.unpack("C*").inject{|s,a| s + a }
+    sum = header.unpack("C*").inject {|s,a| s + a }
     SP(Z(to_oct(sum, 6)))
   end
 
diff --git a/test/rubygems/test_gem.rb b/test/rubygems/test_gem.rb
index 0ff8b4a1db65..53fb058e99d3 100644
--- a/test/rubygems/test_gem.rb
+++ b/test/rubygems/test_gem.rb
@@ -1061,7 +1061,7 @@ def test_self_refresh_keeps_loaded_specs_activated
 
     Gem.refresh
 
-    Gem::Specification.each{|spec| assert spec.activated? if spec == s }
+    Gem::Specification.each {|spec| assert spec.activated? if spec == s }
 
     Gem.loaded_specs.delete(s)
     Gem.refresh
diff --git a/test/rubygems/test_gem_commands_contents_command.rb b/test/rubygems/test_gem_commands_contents_command.rb
index d79174717b7b..cf93d81e7eac 100644
--- a/test/rubygems/test_gem_commands_contents_command.rb
+++ b/test/rubygems/test_gem_commands_contents_command.rb
@@ -239,7 +239,7 @@ def test_execute_default_gem
       [RbConfig::CONFIG['bindir'], 'default_command'],
       [RbConfig::CONFIG['rubylibdir'], 'default/gem.rb'],
       [RbConfig::CONFIG['archdir'], 'default_gem.so'],
-    ].sort.map{|a|File.join a }.join "\n"
+    ].sort.map {|a|File.join a }.join "\n"
 
     assert_equal expected, @ui.output.chomp
     assert_equal "", @ui.error
diff --git a/test/rubygems/test_gem_commands_install_command.rb b/test/rubygems/test_gem_commands_install_command.rb
index 47a97dae4bea..6127fcc1240d 100644
--- a/test/rubygems/test_gem_commands_install_command.rb
+++ b/test/rubygems/test_gem_commands_install_command.rb
@@ -521,7 +521,7 @@ def test_execute_prerelease_skipped_when_non_pre_available
   end
 
   def test_execute_required_ruby_version
-    next_ruby = Gem.ruby_version.segments.map.with_index{|n, i| i == 1 ? n + 1 : n }.join(".")
+    next_ruby = Gem.ruby_version.segments.map.with_index {|n, i| i == 1 ? n + 1 : n }.join(".")
 
     local = Gem::Platform.local
     spec_fetcher do |fetcher|
@@ -610,7 +610,7 @@ def test_execute_required_ruby_version_specific_prerelease_met
   end
 
   def test_execute_required_ruby_version_specific_prerelease_not_met
-    next_ruby_pre = Gem.ruby_version.segments.map.with_index{|n, i| i == 1 ? n + 1 : n }.join(".") + ".a"
+    next_ruby_pre = Gem.ruby_version.segments.map.with_index {|n, i| i == 1 ? n + 1 : n }.join(".") + ".a"
 
     spec_fetcher do |fetcher|
       fetcher.gem 'a', '1.0' do |s|
diff --git a/test/rubygems/test_gem_request_set_lockfile_parser.rb b/test/rubygems/test_gem_request_set_lockfile_parser.rb
index 4007c3a69cee..775085964e1b 100644
--- a/test/rubygems/test_gem_request_set_lockfile_parser.rb
+++ b/test/rubygems/test_gem_request_set_lockfile_parser.rb
@@ -248,7 +248,7 @@ def test_parse_GEM_remote_multiple
     assert_equal %w[a-2], lockfile_set.specs.map {|s| s.full_name }
 
     assert_equal %w[https://gems.example/ https://other.example/],
-                 lockfile_set.specs.flat_map {|s| s.sources.map{|src| src.uri.to_s } }
+                 lockfile_set.specs.flat_map {|s| s.sources.map {|src| src.uri.to_s } }
   end
 
   def test_parse_GIT
diff --git a/test/rubygems/test_gem_resolver_installer_set.rb b/test/rubygems/test_gem_resolver_installer_set.rb
index 928a16b9d351..7a6d17f2b0d5 100644
--- a/test/rubygems/test_gem_resolver_installer_set.rb
+++ b/test/rubygems/test_gem_resolver_installer_set.rb
@@ -210,7 +210,7 @@ def test_prefetch
     def (set.remote_set).prefetch(_)
       raise "called"
     end
-    assert_raise(RuntimeError){ set.prefetch(nil) }
+    assert_raise(RuntimeError) { set.prefetch(nil) }
 
     set = Gem::Resolver::InstallerSet.new :local
     def (set.remote_set).prefetch(_)
diff --git a/test/rubygems/test_gem_specification.rb b/test/rubygems/test_gem_specification.rb
index 55dd7f0ff2d5..8b0477c4dd61 100644
--- a/test/rubygems/test_gem_specification.rb
+++ b/test/rubygems/test_gem_specification.rb
@@ -992,8 +992,8 @@ def test_self_stubs_for_lazy_loading
 
     dir_standard_specs = File.join Gem.dir, 'specifications'
 
-    save_gemspec('a-1', '1', dir_standard_specs){|s| s.name = 'a' }
-    save_gemspec('b-1', '1', dir_standard_specs){|s| s.name = 'b' }
+    save_gemspec('a-1', '1', dir_standard_specs) {|s| s.name = 'a' }
+    save_gemspec('b-1', '1', dir_standard_specs) {|s| s.name = 'b' }
 
     assert_equal ['a-1'], Gem::Specification.stubs_for('a').map {|s| s.full_name }
     assert_equal 1, Gem::Specification.class_variable_get(:@@stubs_by_name).length
@@ -1013,7 +1013,7 @@ def test_self_stubs_for_lazy_loading
   def test_self_stubs_for_no_lazy_loading_after_all_specs_setup
     Gem::Specification.all = [util_spec('a', '1')]
 
-    save_gemspec('b-1', '1', File.join(Gem.dir, 'specifications')){|s| s.name = 'b' }
+    save_gemspec('b-1', '1', File.join(Gem.dir, 'specifications')) {|s| s.name = 'b' }
 
     assert_equal [], Gem::Specification.stubs_for('b').map {|s| s.full_name }
   end
@@ -1060,9 +1060,9 @@ def test_self_stubs_for_mult_platforms
   def test_self_stubs_returns_only_specified_named_specs
     dir_standard_specs = File.join Gem.dir, 'specifications'
 
-    save_gemspec('a-1', '1', dir_standard_specs){|s| s.name = 'a' }
-    save_gemspec('a-2', '2', dir_standard_specs){|s| s.name = 'a' }
-    save_gemspec('a-a', '3', dir_standard_specs){|s| s.name = 'a-a' }
+    save_gemspec('a-1', '1', dir_standard_specs) {|s| s.name = 'a' }
+    save_gemspec('a-2', '2', dir_standard_specs) {|s| s.name = 'a' }
+    save_gemspec('a-a', '3', dir_standard_specs) {|s| s.name = 'a-a' }
 
     assert_equal ['a-1', 'a-2'], Gem::Specification.stubs_for('a').map(&:full_name).sort
   end
diff --git a/test/rubygems/test_require.rb b/test/rubygems/test_require.rb
index 8857ceef2539..9aa057442ad7 100644
--- a/test/rubygems/test_require.rb
+++ b/test/rubygems/test_require.rb
@@ -152,8 +152,8 @@ def test_concurrent_require
 
     install_specs a1, b1
 
-    t1 = create_sync_thread{ assert_require "a#{$$}" }
-    t2 = create_sync_thread{ assert_require "b#{$$}" }
+    t1 = create_sync_thread { assert_require "a#{$$}" }
+    t2 = create_sync_thread { assert_require "b#{$$}" }
 
     # wait until both files are waiting on the exit latch
     FILE_ENTERED_LATCH.await
diff --git a/test/rubygems/test_rubygems.rb b/test/rubygems/test_rubygems.rb
index 26c5f1e0fd65..cc650ff3439e 100644
--- a/test/rubygems/test_rubygems.rb
+++ b/test/rubygems/test_rubygems.rb
@@ -66,6 +66,6 @@ def util_install_operating_system_rb(content)
   end
 
   def ruby_with_rubygems_and_fake_operating_system_in_load_path(operating_system_path)
-    [Gem.ruby, "-I", operating_system_path, "-I" , $LOAD_PATH.find{|p| p == File.dirname($LOADED_FEATURES.find{|f| f.end_with?("/rubygems.rb") }) }]
+    [Gem.ruby, "-I", operating_system_path, "-I" , $LOAD_PATH.find {|p| p == File.dirname($LOADED_FEATURES.find {|f| f.end_with?("/rubygems.rb") }) }]
   end
 end