diff --git a/Library/Homebrew/cask/artifact/abstract_uninstall.rb b/Library/Homebrew/cask/artifact/abstract_uninstall.rb
index 2635bd79d1..aa1261e5ff 100644
--- a/Library/Homebrew/cask/artifact/abstract_uninstall.rb
+++ b/Library/Homebrew/cask/artifact/abstract_uninstall.rb
@@ -38,7 +38,7 @@ module Cask
       attr_reader :directives
 
       def initialize(cask, directives)
-        directives.assert_valid_keys!(*ORDERED_DIRECTIVES)
+        directives.assert_valid_keys(*ORDERED_DIRECTIVES)
 
         super(cask, **directives)
         directives[:signal] = Array(directives[:signal]).flatten.each_slice(2).to_a
diff --git a/Library/Homebrew/cask/artifact/installer.rb b/Library/Homebrew/cask/artifact/installer.rb
index ef20cd0bd1..08b34a46f6 100644
--- a/Library/Homebrew/cask/artifact/installer.rb
+++ b/Library/Homebrew/cask/artifact/installer.rb
@@ -67,7 +67,7 @@ module Cask
           )
         end
 
-        args.assert_valid_keys!(*VALID_KEYS)
+        args.assert_valid_keys(*VALID_KEYS)
         new(cask, **args)
       end
 
diff --git a/Library/Homebrew/cask/artifact/pkg.rb b/Library/Homebrew/cask/artifact/pkg.rb
index 924f731ae4..4c79bcb385 100644
--- a/Library/Homebrew/cask/artifact/pkg.rb
+++ b/Library/Homebrew/cask/artifact/pkg.rb
@@ -18,7 +18,7 @@ module Cask
       attr_reader :path, :stanza_options
 
       def self.from_args(cask, path, **stanza_options)
-        stanza_options.assert_valid_keys!(:allow_untrusted, :choices)
+        stanza_options.assert_valid_keys(:allow_untrusted, :choices)
         new(cask, path, **stanza_options)
       end
 
diff --git a/Library/Homebrew/cask/artifact/relocated.rb b/Library/Homebrew/cask/artifact/relocated.rb
index ee5ca48d73..3c3aff2950 100644
--- a/Library/Homebrew/cask/artifact/relocated.rb
+++ b/Library/Homebrew/cask/artifact/relocated.rb
@@ -20,7 +20,7 @@ module Cask
         if target_hash
           raise CaskInvalidError unless target_hash.respond_to?(:keys)
 
-          target_hash.assert_valid_keys!(:target)
+          target_hash.assert_valid_keys(:target)
         end
 
         target_hash ||= {}
diff --git a/Library/Homebrew/cask/config.rb b/Library/Homebrew/cask/config.rb
index c99ac319da..f1238a3e10 100644
--- a/Library/Homebrew/cask/config.rb
+++ b/Library/Homebrew/cask/config.rb
@@ -110,8 +110,8 @@ module Cask
         return
       end
 
-      @env&.assert_valid_keys!(*self.class.defaults.keys)
-      @explicit.assert_valid_keys!(*self.class.defaults.keys)
+      @env&.assert_valid_keys(*self.class.defaults.keys)
+      @explicit.assert_valid_keys(*self.class.defaults.keys)
     end
 
     sig { returns(T::Hash[Symbol, T.any(String, Pathname, T::Array[String])]) }
diff --git a/Library/Homebrew/cask/dsl/conflicts_with.rb b/Library/Homebrew/cask/dsl/conflicts_with.rb
index 99ca4c9838..96993ca36b 100644
--- a/Library/Homebrew/cask/dsl/conflicts_with.rb
+++ b/Library/Homebrew/cask/dsl/conflicts_with.rb
@@ -22,7 +22,7 @@ module Cask
       ].freeze
 
       def initialize(**options)
-        options.assert_valid_keys!(*VALID_KEYS)
+        options.assert_valid_keys(*VALID_KEYS)
 
         conflicts = options.transform_values { |v| Set.new(Kernel.Array(v)) }
         conflicts.default = Set.new