4 files changed, 9 insertions, 1 deletions
diff --git a/railties/lib/rails/command/actions.rb b/railties/lib/rails/command/actions.rb
index a00e58997c..2f6827b7f4 100644
--- a/railties/lib/rails/command/actions.rb
+++ b/railties/lib/rails/command/actions.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Rails
   module Command
     module Actions
diff --git a/railties/lib/rails/command/base.rb b/railties/lib/rails/command/base.rb
index cd0720be4e..e92b2042bd 100644
--- a/railties/lib/rails/command/base.rb
+++ b/railties/lib/rails/command/base.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "thor"
 require "erb"
 
@@ -73,7 +75,7 @@ module Rails
 
         # Use Rails' default banner.
         def banner(*)
-          "#{executable} #{arguments.map(&:usage).join(' ')} [options]".squish!
+          "#{executable} #{arguments.map(&:usage).join(' ')} [options]".squish
         end
 
         # Sets the base_name taking into account the current class namespace.
diff --git a/railties/lib/rails/command/behavior.rb b/railties/lib/rails/command/behavior.rb
index 4a92f72f16..7a6dd28e1a 100644
--- a/railties/lib/rails/command/behavior.rb
+++ b/railties/lib/rails/command/behavior.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "active_support"
 
 module Rails
diff --git a/railties/lib/rails/command/environment_argument.rb b/railties/lib/rails/command/environment_argument.rb
index 9582509840..5dc98b113d 100644
--- a/railties/lib/rails/command/environment_argument.rb
+++ b/railties/lib/rails/command/environment_argument.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "active_support"
 
 module Rails