diff --git a/CHANGELOG.md b/CHANGELOG.md
index df7b678..c758695 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@
 
 * [#228](https://github.com/rubocop/rubocop-performance/pull/228): Mark `Performance/RedundantMerge` as unsafe. ([@dvandersluis][])
 * [#232](https://github.com/rubocop/rubocop-performance/pull/232): Drop Ruby 2.4 support. ([@koic][])
+* [#235](https://github.com/rubocop/rubocop-performance/pull/235): Require RuboCop 1.7 or higher. ([@koic][])
 
 ## 1.10.2 (2021-03-23)
 
diff --git a/config/obsoletion.yml b/config/obsoletion.yml
new file mode 100644
index 0000000..2aade6c
--- /dev/null
+++ b/config/obsoletion.yml
@@ -0,0 +1,7 @@
+#
+# Configuration for obsoletion.
+#
+# See: https://docs.rubocop.org/rubocop/extensions.html#config-obsoletions
+#
+extracted:
+  Performance/*: ~
diff --git a/lib/rubocop/performance.rb b/lib/rubocop/performance.rb
index 2035903..4ed61a2 100644
--- a/lib/rubocop/performance.rb
+++ b/lib/rubocop/performance.rb
@@ -8,5 +8,7 @@ module Performance
     CONFIG = YAML.safe_load(CONFIG_DEFAULT.read).freeze
 
     private_constant(:CONFIG_DEFAULT, :PROJECT_ROOT)
+
+    ::RuboCop::ConfigObsoletion.files << PROJECT_ROOT.join('config', 'obsoletion.yml')
   end
 end
diff --git a/rubocop-performance.gemspec b/rubocop-performance.gemspec
index 790e8b4..8301c7d 100644
--- a/rubocop-performance.gemspec
+++ b/rubocop-performance.gemspec
@@ -29,6 +29,6 @@ Gem::Specification.new do |s|
     'bug_tracker_uri' => 'https://github.com/rubocop/rubocop-performance/issues'
   }
 
-  s.add_runtime_dependency('rubocop', '>= 0.90.0', '< 2.0')
+  s.add_runtime_dependency('rubocop', '>= 1.7.0', '< 2.0')
   s.add_runtime_dependency('rubocop-ast', '>= 0.4.0')
 end
diff --git a/spec/project_spec.rb b/spec/project_spec.rb
index 0dfd659..e30eed8 100644
--- a/spec/project_spec.rb
+++ b/spec/project_spec.rb
@@ -4,10 +4,6 @@
   describe 'default configuration file' do
     subject(:config) { RuboCop::ConfigLoader.load_file('config/default.yml') }
 
-    before do
-      allow_any_instance_of(RuboCop::Config).to receive(:loaded_features).and_return('rubocop-performance') # rubocop:disable RSpec/AnyInstance
-    end
-
     let(:registry) { RuboCop::Cop::Registry.global }
     let(:cop_names) do
       registry.with_department(:Performance).cops.map(&:cop_name)