diff --git a/Library/Homebrew/cask/cask.rb b/Library/Homebrew/cask/cask.rb
index 7f0d0f2cac..1d012384ac 100644
--- a/Library/Homebrew/cask/cask.rb
+++ b/Library/Homebrew/cask/cask.rb
@@ -330,6 +330,8 @@ module Cask
     # @api internal
     def to_s = token
 
+    # @!visibility private
+    sig { returns(String) }
     def inspect
       "#<Cask #{token}#{sourcefile_path&.to_s&.prepend(" ")}>"
     end
diff --git a/Library/Homebrew/compilers.rb b/Library/Homebrew/compilers.rb
index 9133c6fa8f..e13fc42647 100644
--- a/Library/Homebrew/compilers.rb
+++ b/Library/Homebrew/compilers.rb
@@ -68,6 +68,8 @@ class CompilerFailure
     type == compiler.type && version_matched
   end
 
+  # @!visibility private
+  sig { returns(String) }
   def inspect
     "#<#{self.class.name}: #{type} #{version}>"
   end
diff --git a/Library/Homebrew/cxxstdlib.rb b/Library/Homebrew/cxxstdlib.rb
index a87523c472..1745e51c0e 100644
--- a/Library/Homebrew/cxxstdlib.rb
+++ b/Library/Homebrew/cxxstdlib.rb
@@ -22,6 +22,7 @@ class CxxStdlib
     type.to_s.gsub(/cxx$/, "c++")
   end
 
+  # @!visibility private
   sig { returns(String) }
   def inspect
     "#<#{self.class.name}: #{compiler} #{type}>"
diff --git a/Library/Homebrew/dependencies.rb b/Library/Homebrew/dependencies.rb
index 1e69bfecdf..d59dde9a90 100644
--- a/Library/Homebrew/dependencies.rb
+++ b/Library/Homebrew/dependencies.rb
@@ -37,6 +37,7 @@ class Dependencies < SimpleDelegator
     self.class.new(*__getobj__.reject { |dep| dep.uses_from_macos? && dep.use_macos_install? })
   end
 
+  # @!visibility private
   sig { returns(String) }
   def inspect
     "#<#{self.class.name}: #{__getobj__}>"
@@ -65,6 +66,7 @@ class Requirements < SimpleDelegator
     self
   end
 
+  # @!visibility private
   sig { returns(String) }
   def inspect
     "#<#{self.class.name}: {#{__getobj__.to_a.join(", ")}}>"
diff --git a/Library/Homebrew/dependency.rb b/Library/Homebrew/dependency.rb
index b11d2cff0a..95cf6747fb 100644
--- a/Library/Homebrew/dependency.rb
+++ b/Library/Homebrew/dependency.rb
@@ -96,6 +96,7 @@ class Dependency
     false
   end
 
+  # @!visibility private
   sig { returns(String) }
   def inspect
     "#<#{self.class.name}: #{name.inspect} #{tags.inspect}>"
@@ -279,6 +280,7 @@ class UsesFromMacOSDependency < Dependency
     self.class.new(formula.full_name.to_s, tags, bounds:)
   end
 
+  # @!visibility private
   sig { returns(String) }
   def inspect
     "#<#{self.class.name}: #{name.inspect} #{tags.inspect} #{bounds.inspect}>"
diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index 0f087c7a48..fbf97f2640 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -1735,7 +1735,7 @@ class Formula
     name
   end
 
-  # @private
+  # @!visibility private
   sig { returns(String) }
   def inspect
     "#<Formula #{name} (#{active_spec_sym}) #{path}>"
diff --git a/Library/Homebrew/keg.rb b/Library/Homebrew/keg.rb
index 5c77bb8a96..f89b9a7efa 100644
--- a/Library/Homebrew/keg.rb
+++ b/Library/Homebrew/keg.rb
@@ -177,6 +177,7 @@ class Keg
 
   alias to_path to_s
 
+  # @!visibility private
   sig { returns(String) }
   def inspect
     "#<#{self.class.name}:#{path}>"
diff --git a/Library/Homebrew/options.rb b/Library/Homebrew/options.rb
index 17ff40168d..0cd7b69c22 100644
--- a/Library/Homebrew/options.rb
+++ b/Library/Homebrew/options.rb
@@ -32,6 +32,7 @@ class Option
     name.hash
   end
 
+  # @!visibility private
   sig { returns(String) }
   def inspect
     "#<#{self.class.name}: #{flag.inspect}>"
@@ -144,6 +145,7 @@ class Options
     @options.map(&:to_s).join(" ")
   end
 
+  # @!visibility private
   sig { returns(String) }
   def inspect
     "#<#{self.class.name}: #{to_a.inspect}>"
diff --git a/Library/Homebrew/patch.rb b/Library/Homebrew/patch.rb
index 971f6c6dca..8b5afc10f9 100644
--- a/Library/Homebrew/patch.rb
+++ b/Library/Homebrew/patch.rb
@@ -55,6 +55,7 @@ class EmbeddedPatch
     Utils.safe_popen_write("patch", *args) { |p| p.write(data) }
   end
 
+  # @!visibility private
   sig { returns(String) }
   def inspect
     "#<#{self.class.name}: #{strip.inspect}>"
@@ -160,6 +161,7 @@ class ExternalPatch
     raise BuildError.new(f, cmd, args, ENV.to_hash)
   end
 
+  # @!visibility private
   sig { returns(String) }
   def inspect
     "#<#{self.class.name}: #{strip.inspect} #{url.inspect}>"
diff --git a/Library/Homebrew/requirement.rb b/Library/Homebrew/requirement.rb
index 3e0c5ffff3..7a5413826b 100644
--- a/Library/Homebrew/requirement.rb
+++ b/Library/Homebrew/requirement.rb
@@ -142,6 +142,7 @@ class Requirement
     [self.class, name, tags].hash
   end
 
+  # @!visibility private
   sig { returns(String) }
   def inspect
     "#<#{self.class.name}: #{tags.inspect}>"
diff --git a/Library/Homebrew/requirements/arch_requirement.rb b/Library/Homebrew/requirements/arch_requirement.rb
index 17ce1c2701..3b2fc1f2d6 100644
--- a/Library/Homebrew/requirements/arch_requirement.rb
+++ b/Library/Homebrew/requirements/arch_requirement.rb
@@ -29,6 +29,8 @@ class ArchRequirement < Requirement
     "The #{@arch} architecture is required for this software."
   end
 
+  # @!visibility private
+  sig { returns(String) }
   def inspect
     "#<#{self.class.name}: arch=#{@arch.to_s.inspect} #{tags.inspect}>"
   end
diff --git a/Library/Homebrew/requirements/macos_requirement.rb b/Library/Homebrew/requirements/macos_requirement.rb
index b58a3ce50d..9a55b79362 100644
--- a/Library/Homebrew/requirements/macos_requirement.rb
+++ b/Library/Homebrew/requirements/macos_requirement.rb
@@ -98,6 +98,7 @@ class MacOSRequirement < Requirement
     [super, comparator, version].hash
   end
 
+  # @!visibility private
   sig { returns(String) }
   def inspect
     "#<#{self.class.name}: version#{@comparator}#{@version.to_s.inspect} #{tags.inspect}>"
diff --git a/Library/Homebrew/requirements/xcode_requirement.rb b/Library/Homebrew/requirements/xcode_requirement.rb
index 097d0d3e07..abc74e088c 100644
--- a/Library/Homebrew/requirements/xcode_requirement.rb
+++ b/Library/Homebrew/requirements/xcode_requirement.rb
@@ -50,6 +50,7 @@ class XcodeRequirement < Requirement
     end
   end
 
+  # @!visibility private
   sig { returns(String) }
   def inspect
     "#<#{self.class.name}: version>=#{@version.inspect} #{tags.inspect}>"
diff --git a/Library/Homebrew/version.rb b/Library/Homebrew/version.rb
index d1b531b9ad..79c678345a 100644
--- a/Library/Homebrew/version.rb
+++ b/Library/Homebrew/version.rb
@@ -59,6 +59,7 @@ class Version
     sig { abstract.params(other: T.untyped).returns(T.nilable(Integer)) }
     def <=>(other); end
 
+    # @!visibility private
     sig { returns(String) }
     def inspect
       "#<#{self.class.name} #{value.inspect}>"
@@ -133,7 +134,8 @@ class Version
     sig { returns(T::Boolean) }
     def blank? = true
 
-    sig { override.returns(String) }
+    # @!visibility private
+    sig { returns(String) }
     def inspect
       "#<#{self.class.name}>"
     end
@@ -726,6 +728,7 @@ class Version
     super
   end
 
+  # @!visibility private
   sig { returns(String) }
   def inspect
     return "#<Version::NULL>" if null?