diff --git a/.gitignore b/.gitignore
index f4692e2200..12fd4fb18f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -63,7 +63,6 @@
 !**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/
 !**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/
 !**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/*/
-!**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/hash/deep_transform_values.rb
 !**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/hash/keys.rb
 !**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/object/deep_dup.rb
 !**/vendor/bundle/ruby/*/gems/activesupport-*/lib/active_support/core_ext/object/duplicable.rb
diff --git a/Library/Homebrew/vendor/bundle/ruby/3.1.0/gems/activesupport-6.1.7.6/lib/active_support/core_ext/hash/deep_transform_values.rb b/Library/Homebrew/extend/hash/deep_transform_values.rb
similarity index 98%
rename from Library/Homebrew/vendor/bundle/ruby/3.1.0/gems/activesupport-6.1.7.6/lib/active_support/core_ext/hash/deep_transform_values.rb
rename to Library/Homebrew/extend/hash/deep_transform_values.rb
index 8ad85c0a6d..c3dd789d25 100644
--- a/Library/Homebrew/vendor/bundle/ruby/3.1.0/gems/activesupport-6.1.7.6/lib/active_support/core_ext/hash/deep_transform_values.rb
+++ b/Library/Homebrew/extend/hash/deep_transform_values.rb
@@ -1,3 +1,4 @@
+# typed: strict
 # frozen_string_literal: true
 
 class Hash
diff --git a/Library/Homebrew/extend/hash/deep_transform_values.rbi b/Library/Homebrew/extend/hash/deep_transform_values.rbi
new file mode 100644
index 0000000000..072474393b
--- /dev/null
+++ b/Library/Homebrew/extend/hash/deep_transform_values.rbi
@@ -0,0 +1,22 @@
+# typed: strict
+
+class Hash
+  sig {
+    type_parameters(:out).params(
+      block: T.proc.params(o: Hash::V).returns(T.type_parameter(:out))
+    ).returns(T::Hash[Hash::K, T.type_parameter(:out)])
+  }
+  def deep_transform_values(&block); end
+  sig {
+    type_parameters(:out).params(
+      block: T.proc.params(o: Hash::V).returns(T.type_parameter(:out))
+    ).returns(T::Hash[Hash::K, T.type_parameter(:out)])
+  }
+  def deep_transform_values!(&block); end
+
+  sig { params(object: T.anything, block: T.untyped).returns(T.untyped) }
+  def _deep_transform_values_in_object(object, &block); end
+
+  sig { params(object: T.anything, block: T.untyped).returns(T.untyped) }
+  def _deep_transform_values_in_object!(object, &block); end
+end
diff --git a/Library/Homebrew/formulary.rb b/Library/Homebrew/formulary.rb
index f473dcb08a..6690311389 100644
--- a/Library/Homebrew/formulary.rb
+++ b/Library/Homebrew/formulary.rb
@@ -9,7 +9,7 @@ require "service"
 require "utils/curl"
 require "deprecate_disable"
 
-require "active_support/core_ext/hash/deep_transform_values"
+require "extend/hash/deep_transform_values"
 
 # The {Formulary} is responsible for creating instances of {Formula}.
 # It is not meant to be used directly from formulae.
diff --git a/Library/Homebrew/tab.rb b/Library/Homebrew/tab.rb
index 25033917e5..44225a085b 100644
--- a/Library/Homebrew/tab.rb
+++ b/Library/Homebrew/tab.rb
@@ -92,7 +92,7 @@ class Tab
     end
 
     if attributes["source"]["spec"].nil?
-      version = PkgVersion.parse path.to_s.split("/")[-2]
+      version = PkgVersion.parse(File.basename(File.dirname(path)))
       attributes["source"]["spec"] = if version.head?
         "head"
       else