diff --git a/.rubocop.yml b/.rubocop.yml
index f4e71149..2ed66551 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -76,3 +76,6 @@ Style/WhileUntilModifier:
 
 Style/TernaryParentheses:
   Enabled: true
+
+Style/RedundantReturn:
+  Enabled: true
diff --git a/lib/puma/client.rb b/lib/puma/client.rb
index 8b203376..8ff6c6fb 100644
--- a/lib/puma/client.rb
+++ b/lib/puma/client.rb
@@ -309,7 +309,7 @@ module Puma
 
       @body_remain = remain
 
-      return false
+      false
     end
 
     def read_body
diff --git a/lib/puma/plugin.rb b/lib/puma/plugin.rb
index 008385c0..eb32f312 100644
--- a/lib/puma/plugin.rb
+++ b/lib/puma/plugin.rb
@@ -91,7 +91,7 @@ module Puma
       path = ary.first[CALLER_FILE]
 
       m = %r!puma/plugin/([^/]*)\.rb$!.match(path)
-      return m[1]
+      m[1]
     end
 
     def self.create(&blk)
diff --git a/lib/puma/rack/builder.rb b/lib/puma/rack/builder.rb
index cf00d975..2c46cb1e 100644
--- a/lib/puma/rack/builder.rb
+++ b/lib/puma/rack/builder.rb
@@ -165,7 +165,7 @@ module Puma::Rack
         require config
         app = Object.const_get(::File.basename(config, '.rb').capitalize)
       end
-      return app, options
+      [app, options]
     end
 
     def self.new_from_string(builder_script, file="(rackup)")
diff --git a/lib/puma/request.rb b/lib/puma/request.rb
index 5b7ab228..8912db30 100644
--- a/lib/puma/request.rb
+++ b/lib/puma/request.rb
@@ -176,7 +176,7 @@ module Puma
         after_reply.each { |o| o.call }
       end
 
-      return res_info[:keep_alive]
+      res_info[:keep_alive]
     end
 
     # @param env [Hash] see Puma::Client#env, from request
diff --git a/lib/puma/server.rb b/lib/puma/server.rb
index bf2dbc4f..e55e95ed 100644
--- a/lib/puma/server.rb
+++ b/lib/puma/server.rb
@@ -396,7 +396,7 @@ module Puma
         return true
       end
 
-      return false
+      false
     end
 
     # Given a connection on +client+, handle the incoming requests,
diff --git a/lib/puma/util.rb b/lib/puma/util.rb
index c2b3b412..d4928e13 100644
--- a/lib/puma/util.rb
+++ b/lib/puma/util.rb
@@ -61,7 +61,7 @@ module Puma
         end
       end
 
-      return params
+      params
     end
 
     # A case-insensitive Hash that preserves the original case of a
diff --git a/test/test_http11.rb b/test/test_http11.rb
index 9a1f9d91..9e49b7b3 100644
--- a/test/test_http11.rb
+++ b/test/test_http11.rb
@@ -137,7 +137,7 @@ class Http11ParserTest < Minitest::Test
       res << Digest::SHA1.digest(rand(count * 100).to_s) * (count / 20)
     end
 
-    return res
+    res
   end
 
   def test_max_uri_path_length