diff --git a/.rubocop.yml b/.rubocop.yml
index fdf5cb2..2756af9 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -10,6 +10,10 @@ inherit_gem:
 
 AllCops:
   TargetRubyVersion: 3.2
+  Include:
+    - libexec/quran-json/*
+    - lib/quran-json/**/*.rb
+    - bin/*
 
 ##
 # Enabled cops
@@ -24,5 +28,3 @@ Layout/ArgumentAlignment:
   Enabled: false
 Style/LambdaCall:
   Enabled: false
-Style/FrozenStringLiteralComment:
-  Enabled: false
diff --git a/bin/quran-json b/bin/quran-json
index 4421660..b4a4dc8 100755
--- a/bin/quran-json
+++ b/bin/quran-json
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 require "json"
 
 ##
diff --git a/lib/quran-json/quran/json.rb b/lib/quran-json/quran/json.rb
index 82586a3..904af9e 100644
--- a/lib/quran-json/quran/json.rb
+++ b/lib/quran-json/quran/json.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Quran
   module JSON
     require_relative "json/cmd"
diff --git a/lib/quran-json/quran/json/cmd.rb b/lib/quran-json/quran/json/cmd.rb
index 74ca78c..8e97934 100644
--- a/lib/quran-json/quran/json/cmd.rb
+++ b/lib/quran-json/quran/json/cmd.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Quran::JSON::Cmd
   require "ryo"
   require "json"
diff --git a/lib/quran-json/quran/json/pull.rb b/lib/quran-json/quran/json/pull.rb
index 15f95ed..f49bca9 100644
--- a/lib/quran-json/quran/json/pull.rb
+++ b/lib/quran-json/quran/json/pull.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class Quran::JSON::Pull
   require "ryo"
   require "json"
@@ -43,7 +45,7 @@ class Quran::JSON::Pull
 
   def write(surah_no, rows)
     mkdir_p(locale_dir)
-    rows[0] = Ryo.table_of(metadata[surah_no-1])
+    rows[0] = Ryo.table_of(metadata[surah_no - 1])
     write_json File.join(locale_dir, "#{surah_no}.json"), rows
   end
 
@@ -100,8 +102,6 @@ class Quran::JSON::Pull
   end
 
   def sources
-    @sources ||= Ryo.from(
-      JSON.parse File.binread(File.join(data_dir, "sources.json"))
-    )
+    @sources ||= Ryo.from read_json(File.join(data_dir, "sources.json"))
   end
 end
diff --git a/libexec/quran-json/quran.com b/libexec/quran-json/quran.com
index 128cf73..fed4fef 100755
--- a/libexec/quran-json/quran.com
+++ b/libexec/quran-json/quran.com
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 lib_dir = File.realpath File.join(__dir__, "..", "..", "lib", "quran-json")
 require File.join(lib_dir, "quran", "json")
 require "optparse"
diff --git a/libexec/quran-json/www.searchtruth.com b/libexec/quran-json/www.searchtruth.com
index b6ac15c..5687f6d 100755
--- a/libexec/quran-json/www.searchtruth.com
+++ b/libexec/quran-json/www.searchtruth.com
@@ -1,4 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
+
 lib_dir = File.realpath File.join(__dir__, "..", "..", "lib", "quran-json")
 require File.join(lib_dir, "quran", "json")
 require "optparse"