diff --git a/Library/Homebrew/cask/config.rb b/Library/Homebrew/cask/config.rb
index 706ab32300..ae3533e7a8 100644
--- a/Library/Homebrew/cask/config.rb
+++ b/Library/Homebrew/cask/config.rb
@@ -194,12 +194,12 @@ module Cask
     end
 
     sig { params(options: T.untyped).returns(String) }
-    def to_json(**options)
+    def to_json(*options)
       {
         default:  default,
         env:      env,
         explicit: explicit,
-      }.to_json(**options)
+      }.to_json(*options)
     end
   end
 end
diff --git a/Library/Homebrew/dev-cmd/generate-cask-api.rb b/Library/Homebrew/dev-cmd/generate-cask-api.rb
index cb092edba7..6ad4f38ff6 100644
--- a/Library/Homebrew/dev-cmd/generate-cask-api.rb
+++ b/Library/Homebrew/dev-cmd/generate-cask-api.rb
@@ -3,6 +3,7 @@
 
 require "cli/parser"
 require "cask/cask"
+require "formula"
 
 module Homebrew
   module_function
diff --git a/Library/Homebrew/version.rb b/Library/Homebrew/version.rb
index 3157d40b75..b188deb003 100644
--- a/Library/Homebrew/version.rb
+++ b/Library/Homebrew/version.rb
@@ -711,9 +711,9 @@ class Version
     T.must(version).to_str
   end
 
-  sig { params(options: Hash).returns(String) }
-  def to_json(**options)
-    version.to_json(**options)
+  sig { params(options: T.untyped).returns(String) }
+  def to_json(*options)
+    version.to_json(*options)
   end
 
   sig { params(method: T.any(Symbol, String), include_all: T::Boolean).returns(T::Boolean) }