diff --git a/.github/workflows/type_checking.yml b/.github/workflows/type_checking.yml
index ed6b3db..adac8b3 100644
--- a/.github/workflows/type_checking.yml
+++ b/.github/workflows/type_checking.yml
@@ -25,4 +25,4 @@ jobs:
       with:
         ruby-version: ${{ matrix.ruby }}
         bundler-cache: true
-    - run: bin/steep check
+    - run: rbs collection install && bin/steep check
diff --git a/.gitignore b/.gitignore
index 0aa3ee2..4847829 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /.rubocop-*
+/.gem_rbs_collection
diff --git a/rbs_collection.lock.yaml b/rbs_collection.lock.yaml
new file mode 100644
index 0000000..b21332c
--- /dev/null
+++ b/rbs_collection.lock.yaml
@@ -0,0 +1,110 @@
+---
+sources:
+- type: git
+  name: ruby/gem_rbs_collection
+  revision: d114ffa80f35b138aceb7660a224d78afa1b2a63
+  remote: https://github.com/ruby/gem_rbs_collection.git
+  repo_dir: gems
+path: ".gem_rbs_collection"
+gems:
+- name: activemodel
+  version: '7.0'
+  source:
+    type: git
+    name: ruby/gem_rbs_collection
+    revision: d114ffa80f35b138aceb7660a224d78afa1b2a63
+    remote: https://github.com/ruby/gem_rbs_collection.git
+    repo_dir: gems
+- name: activerecord
+  version: '7.0'
+  source:
+    type: git
+    name: ruby/gem_rbs_collection
+    revision: d114ffa80f35b138aceb7660a224d78afa1b2a63
+    remote: https://github.com/ruby/gem_rbs_collection.git
+    repo_dir: gems
+- name: activesupport
+  version: '7.0'
+  source:
+    type: git
+    name: ruby/gem_rbs_collection
+    revision: d114ffa80f35b138aceb7660a224d78afa1b2a63
+    remote: https://github.com/ruby/gem_rbs_collection.git
+    repo_dir: gems
+- name: ast
+  version: '2.4'
+  source:
+    type: git
+    name: ruby/gem_rbs_collection
+    revision: d114ffa80f35b138aceb7660a224d78afa1b2a63
+    remote: https://github.com/ruby/gem_rbs_collection.git
+    repo_dir: gems
+- name: concurrent-ruby
+  version: '1.1'
+  source:
+    type: git
+    name: ruby/gem_rbs_collection
+    revision: d114ffa80f35b138aceb7660a224d78afa1b2a63
+    remote: https://github.com/ruby/gem_rbs_collection.git
+    repo_dir: gems
+- name: date
+  version: '0'
+  source:
+    type: stdlib
+- name: i18n
+  version: '1.10'
+  source:
+    type: git
+    name: ruby/gem_rbs_collection
+    revision: d114ffa80f35b138aceb7660a224d78afa1b2a63
+    remote: https://github.com/ruby/gem_rbs_collection.git
+    repo_dir: gems
+- name: json
+  version: '0'
+  source:
+    type: stdlib
+- name: logger
+  version: '0'
+  source:
+    type: stdlib
+- name: minitest
+  version: '0'
+  source:
+    type: stdlib
+- name: monitor
+  version: '0'
+  source:
+    type: stdlib
+- name: mutex_m
+  version: '0'
+  source:
+    type: stdlib
+- name: parallel
+  version: '1.20'
+  source:
+    type: git
+    name: ruby/gem_rbs_collection
+    revision: d114ffa80f35b138aceb7660a224d78afa1b2a63
+    remote: https://github.com/ruby/gem_rbs_collection.git
+    repo_dir: gems
+- name: rainbow
+  version: '3.0'
+  source:
+    type: git
+    name: ruby/gem_rbs_collection
+    revision: d114ffa80f35b138aceb7660a224d78afa1b2a63
+    remote: https://github.com/ruby/gem_rbs_collection.git
+    repo_dir: gems
+- name: securerandom
+  version: '0'
+  source:
+    type: stdlib
+- name: singleton
+  version: '0'
+  source:
+    type: stdlib
+- name: time
+  version: '0'
+  source:
+    type: stdlib
+gemfile_lock_path: Gemfile.lock
diff --git a/rbs_collection.yaml b/rbs_collection.yaml
new file mode 100644
index 0000000..8d6ed56
--- /dev/null
+++ b/rbs_collection.yaml
@@ -0,0 +1,15 @@
+# Download sources
+sources:
+  - type: git
+    name: ruby/gem_rbs_collection
+    remote: https://github.com/ruby/gem_rbs_collection.git
+    revision: main
+    repo_dir: gems
+
+path: .gem_rbs_collection
+
+gems:
+  - name: rbs
+    ignore: true
+  - name: steep
+    ignore: true