diff --git a/.gems/colorize/1.1/.rbs_meta.yaml b/.gems/colorize/1.1/.rbs_meta.yaml
deleted file mode 100644
index 419b030..0000000
--- a/.gems/colorize/1.1/.rbs_meta.yaml
+++ /dev/null
@@ -1,9 +0,0 @@
----
-name: colorize
-version: '1.1'
-source:
-  type: git
-  name: apexatoll/gem_signatures
-  revision: 1094d5a2ee9a07f3fbf6880980eaa099fb655ba9
-  remote: https://github.com/apexatoll/gem_signatures
-  repo_dir: sig
diff --git a/.gems/colorize/1.1/colorize.rbs b/.gems/colorize/1.1/colorize.rbs
deleted file mode 100644
index 201b39d..0000000
--- a/.gems/colorize/1.1/colorize.rbs
+++ /dev/null
@@ -1,32 +0,0 @@
-class String
-def black: -> instance
-  def red: -> instance
-  def green: -> instance
-  def yellow: -> instance
-  def blue: -> instance
-  def magenta: -> instance
-  def cyan: -> instance
-  def white: -> instance
-  def default: -> instance
-  def light_black: -> instance
-  def light_red: -> instance
-  def light_green: -> instance
-  def light_yellow: -> instance
-  def light_blue: -> instance
-  def light_magenta: -> instance
-  def light_cyan: -> instance
-  def light_white: -> instance
-  def bold: -> instance
-  def dim: -> instance
-  def italic: -> instance
-  def underline: -> instance
-  def blink: -> instance
-  def blink_slow: -> instance
-  def blink_fast: -> instance
-  def invert: -> instance
-  def hide: -> instance
-  def strike: -> instance
-  def double_underline: -> instance
-  def reveal: -> instance
-  def overlined: -> instance
-end
diff --git a/.gems/sequel/5.72/.rbs_meta.yaml b/.gems/sequel/5.72/.rbs_meta.yaml
deleted file mode 100644
index 21f34cc..0000000
--- a/.gems/sequel/5.72/.rbs_meta.yaml
+++ /dev/null
@@ -1,9 +0,0 @@
----
-name: sequel
-version: '5.72'
-source:
-  type: git
-  name: apexatoll/gem_signatures
-  revision: 1094d5a2ee9a07f3fbf6880980eaa099fb655ba9
-  remote: https://github.com/apexatoll/gem_signatures
-  repo_dir: sig
diff --git a/.gems/sequel/5.72/database.rbs b/.gems/sequel/5.72/database.rbs
deleted file mode 100644
index cb2c582..0000000
--- a/.gems/sequel/5.72/database.rbs
+++ /dev/null
@@ -1,5 +0,0 @@
-module Sequel
-  class Database
-
-  end
-end
diff --git a/.gems/sequel/5.72/migrator.rbs b/.gems/sequel/5.72/migrator.rbs
deleted file mode 100644
index 1e4a008..0000000
--- a/.gems/sequel/5.72/migrator.rbs
+++ /dev/null
@@ -1,5 +0,0 @@
-module Sequel
-  class Migrator
-    def self.run: (Sequel::Database, String) -> void
-  end
-end
diff --git a/.gems/sequel/5.72/sequel.rbs b/.gems/sequel/5.72/sequel.rbs
deleted file mode 100644
index 4de7381..0000000
--- a/.gems/sequel/5.72/sequel.rbs
+++ /dev/null
@@ -1,5 +0,0 @@
-module Sequel
-  def self.sqlite: (String path) -> Database
-
-  def self.extension: (Symbol) -> void
-end
diff --git a/.gems/zeitwerk/2.6/.rbs_meta.yaml b/.gems/zeitwerk/2.6/.rbs_meta.yaml
deleted file mode 100644
index 8a1c1c9..0000000
--- a/.gems/zeitwerk/2.6/.rbs_meta.yaml
+++ /dev/null
@@ -1,9 +0,0 @@
----
-name: zeitwerk
-version: '2.6'
-source:
-  type: git
-  name: apexatoll/gem_signatures
-  revision: 1094d5a2ee9a07f3fbf6880980eaa099fb655ba9
-  remote: https://github.com/apexatoll/gem_signatures
-  repo_dir: sig
diff --git a/.gems/zeitwerk/2.6/gem_inflector.rbs b/.gems/zeitwerk/2.6/gem_inflector.rbs
deleted file mode 100755
index 0fbb580..0000000
--- a/.gems/zeitwerk/2.6/gem_inflector.rbs
+++ /dev/null
@@ -1,7 +0,0 @@
-module Zeitwerk
-  class GemInflector
-    def initialize: (String file) -> void
-
-    def inflect: (Hash[String, String]) -> void
-  end
-end
diff --git a/.gems/zeitwerk/2.6/loader.rbs b/.gems/zeitwerk/2.6/loader.rbs
deleted file mode 100755
index 9079d8e..0000000
--- a/.gems/zeitwerk/2.6/loader.rbs
+++ /dev/null
@@ -1,13 +0,0 @@
-module Zeitwerk
-  class Loader
-    attr_accessor inflector: GemInflector
-
-    def self.for_gem: (?warn_on_extra_files: bool) -> instance
-
-    def collapse: (Array[String]) -> void
-
-    def push_dir: (String dir, ?namespace: Module) -> void
-
-    def setup: -> void
-  end
-end
diff --git a/.gitignore b/.gitignore
index ba831eb..4633f6f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 /doc/
 /pkg/
 /tmp/
+/.gems/
diff --git a/Gemfile b/Gemfile
index 03f4164..8eb9a5e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,9 +2,13 @@ source "https://rubygems.org"
 
 gemspec
 
+gem "fileutils"
+gem "forwardable"
+gem "pathname"
 gem "rake", "~> 13.0"
 gem "rspec", "~> 3.0"
 gem "rubocop", "~> 1.21"
 gem "rubocop-rspec", "~> 2.23"
 gem "steep", "~> 1.5"
+gem "yaml"
 gem "zirconia", "~> 0.1"
diff --git a/Gemfile.lock b/Gemfile.lock
index f182871..4cfb9a7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -28,6 +28,7 @@ GEM
       cgi (>= 0.3.3)
     ffi (1.15.5)
     fileutils (1.7.1)
+    forwardable (1.3.3)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
     json (2.6.3)
@@ -41,6 +42,7 @@ GEM
     parser (3.2.2.3)
       ast (~> 2.4.1)
       racc
+    pathname (0.2.1)
     racc (1.7.1)
     rainbow (3.1.1)
     rake (13.0.6)
@@ -112,6 +114,7 @@ GEM
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.4.2)
+    yaml (0.2.1)
     zeitwerk (2.6.11)
     zirconia (0.1.2)
 
@@ -120,12 +123,16 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
+  fileutils
+  forwardable
   kangaru!
+  pathname
   rake (~> 13.0)
   rspec (~> 3.0)
   rubocop (~> 1.21)
   rubocop-rspec (~> 2.23)
   steep (~> 1.5)
+  yaml
   zirconia (~> 0.1)
 
 BUNDLED WITH
diff --git a/rbs_collection.lock.yaml b/rbs_collection.lock.yaml
index 0f3cb4e..9336c3f 100644
--- a/rbs_collection.lock.yaml
+++ b/rbs_collection.lock.yaml
@@ -2,12 +2,12 @@
 sources:
 - type: git
   name: apexatoll/gem_signatures
-  revision: a6ee8a6175d4672e16cd149d88217aacf4f8dea1
+  revision: 8eb0b43b978c3d9a00b6af015a4cb8e3cf5b1fd3
   remote: https://github.com/apexatoll/gem_signatures
   repo_dir: sig
 - type: git
   name: ruby/gem_rbs_collection
-  revision: 3e93a59bd5da185b68187991630ac9a54a2468a7
+  revision: 2de2d4535caba275f3b8533684aab110d921f553
   remote: https://github.com/ruby/gem_rbs_collection.git
   repo_dir: gems
 path: ".gems"
@@ -25,7 +25,7 @@ gems:
   source:
     type: git
     name: apexatoll/gem_signatures
-    revision: 1094d5a2ee9a07f3fbf6880980eaa099fb655ba9
+    revision: 8eb0b43b978c3d9a00b6af015a4cb8e3cf5b1fd3
     remote: https://github.com/apexatoll/gem_signatures
     repo_dir: sig
 - name: dbm
@@ -57,7 +57,7 @@ gems:
   source:
     type: git
     name: apexatoll/gem_signatures
-    revision: 1094d5a2ee9a07f3fbf6880980eaa099fb655ba9
+    revision: 8eb0b43b978c3d9a00b6af015a4cb8e3cf5b1fd3
     remote: https://github.com/apexatoll/gem_signatures
     repo_dir: sig
 - name: tempfile
@@ -73,7 +73,7 @@ gems:
   source:
     type: git
     name: apexatoll/gem_signatures
-    revision: 1094d5a2ee9a07f3fbf6880980eaa099fb655ba9
+    revision: 8eb0b43b978c3d9a00b6af015a4cb8e3cf5b1fd3
     remote: https://github.com/apexatoll/gem_signatures
     repo_dir: sig
 - name: zirconia
diff --git a/rbs_collection.yaml b/rbs_collection.yaml
index 1e4aeba..5227f2a 100644
--- a/rbs_collection.yaml
+++ b/rbs_collection.yaml
@@ -22,8 +22,3 @@ gems:
     ignore: true
   - name: steep
     ignore: true
-  
-  - name: fileutils
-  - name: forwardable
-  - name: pathname
-  - name: yaml
diff --git a/sig/zeitwerk/loader.rbs b/sig/zeitwerk/loader.rbs
deleted file mode 100644
index b2ec374..0000000
--- a/sig/zeitwerk/loader.rbs
+++ /dev/null
@@ -1,5 +0,0 @@
-module Zeitwerk
-  class Loader
-    def eager_load_namespace: (Module) -> void
-  end
-end