diff --git a/Library/Homebrew/cask/audit.rb b/Library/Homebrew/cask/audit.rb
index a514a073b7..5398a2feb6 100644
--- a/Library/Homebrew/cask/audit.rb
+++ b/Library/Homebrew/cask/audit.rb
@@ -165,7 +165,7 @@ module Cask
       odebug "Auditing stanzas which require an uninstall"
 
       return if cask.artifacts.none? { |k| k.is_a?(Artifact::Pkg) || k.is_a?(Artifact::Installer) }
-      return if cask.artifacts.any? { |k| k.is_a?(Artifact::Uninstall) }
+      return if cask.artifacts.any?(Artifact::Uninstall)
 
       add_error "installer and pkg stanzas require an uninstall stanza"
     end
diff --git a/Library/Homebrew/cli/parser.rb b/Library/Homebrew/cli/parser.rb
index b00e0aed3f..1ebd604576 100644
--- a/Library/Homebrew/cli/parser.rb
+++ b/Library/Homebrew/cli/parser.rb
@@ -474,7 +474,7 @@ module Homebrew
 
               "<#{type}>"
             end.compact
-            types << "<subcommand>" if @named_args_type.any? { |type| type.is_a? String }
+            types << "<subcommand>" if @named_args_type.any?(String)
             types.join("|")
           elsif SYMBOL_TO_USAGE_MAPPING.key? @named_args_type
             SYMBOL_TO_USAGE_MAPPING[@named_args_type]
diff --git a/Library/Homebrew/dev-cmd/unbottled.rb b/Library/Homebrew/dev-cmd/unbottled.rb
index 2c0f098f57..d25d46a06e 100644
--- a/Library/Homebrew/dev-cmd/unbottled.rb
+++ b/Library/Homebrew/dev-cmd/unbottled.rb
@@ -166,11 +166,11 @@ module Homebrew
 
       requirements = f.recursive_requirements
       if @bottle_tag.to_s.end_with?("_linux")
-        if requirements.any? { |r| r.is_a?(MacOSRequirement) }
+        if requirements.any?(MacOSRequirement)
           puts "#{Tty.bold}#{Tty.red}#{name}#{Tty.reset}: requires macOS" if any_named_args
           next
         end
-      elsif requirements.any? { |r| r.is_a?(LinuxRequirement) }
+      elsif requirements.any?(LinuxRequirement)
         puts "#{Tty.bold}#{Tty.red}#{name}#{Tty.reset}: requires Linux" if any_named_args
         next
       else
diff --git a/Library/Homebrew/download_strategy.rb b/Library/Homebrew/download_strategy.rb
index 936eac09b0..ec5da965af 100644
--- a/Library/Homebrew/download_strategy.rb
+++ b/Library/Homebrew/download_strategy.rb
@@ -1049,7 +1049,7 @@ class CVSDownloadStrategy < VCSDownloadStrategy
   end
 
   def split_url(in_url)
-    parts = in_url.split(/:/)
+    parts = in_url.split(":")
     mod = parts.pop
     url = parts.join(":")
     [mod, url]