diff --git a/.rubocop.yml b/.rubocop.yml
index 3f20a3435..96af51a31 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,4 +1,7 @@
-require: rubocop-rubycw
+require:
+  - rubocop-rubycw
+  - rubocop-on-rbs
+
 AllCops:
   TargetRubyVersion: 3.0
   DisabledByDefault: true
@@ -9,6 +12,27 @@ Rubycw/Rubycw:
   Exclude:
     - 'test/**/*_test.rb'
 
+RBS:
+  Enabled: true
+RBS/Layout:
+  Enabled: true
+  Exclude:
+    - 'sig/**/*'
+    - 'test/**/*'
+RBS/Layout/CommentIndentation:
+  Exclude:
+    - core/string.rbs
+RBS/Lint:
+  Enabled: true
+  Exclude:
+    - 'sig/**/*'
+    - 'test/**/*'
+RBS/Style:
+  Enabled: false
+  Exclude:
+    - 'sig/**/*'
+    - 'test/**/*'
+
 Lint/DuplicateMethods:
   Enabled: true
   Include:
diff --git a/Gemfile b/Gemfile
index 7400b55a1..4395c821e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,6 +10,7 @@ gem "test-unit"
 gem "rspec"
 gem "rubocop"
 gem "rubocop-rubycw"
+gem "rubocop-on-rbs"
 gem "json"
 gem "json-schema"
 gem "goodcheck"
diff --git a/Gemfile.lock b/Gemfile.lock
index 2b1aca7f4..12fcf9971 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -113,6 +113,10 @@ GEM
       unicode-display_width (>= 2.4.0, < 3.0)
     rubocop-ast (1.31.3)
       parser (>= 3.3.1.0)
+    rubocop-on-rbs (0.6.0)
+      rbs (~> 3.5)
+      rubocop (~> 1.41)
+      zlib
     rubocop-rubycw (0.1.6)
       rubocop (~> 1.0)
     ruby-progressbar (1.13.0)
@@ -145,6 +149,7 @@ GEM
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.5.0)
+    zlib (3.1.1)
 
 PLATFORMS
   ruby
@@ -175,6 +180,7 @@ DEPENDENCIES
   rdoc
   rspec
   rubocop
+  rubocop-on-rbs
   rubocop-rubycw
   stackprof
   steep (~> 1.7.1)
diff --git a/Rakefile b/Rakefile
index f4561e93e..9b1108fcb 100644
--- a/Rakefile
+++ b/Rakefile
@@ -110,7 +110,13 @@ task :raap => :compile do
 end
 
 task :rubocop do
-  sh "rubocop --parallel"
+  format = if ENV["CI"]
+    "github"
+  else
+    "progress"
+  end
+
+  sh "rubocop --parallel --format #{format}"
 end
 
 namespace :generate do