9 files changed, 9 insertions, 0 deletions
diff --git a/lib/net/http/backward.rb b/lib/net/http/backward.rb
index faf47b8489..9e24eae32c 100644
--- a/lib/net/http/backward.rb
+++ b/lib/net/http/backward.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # for backward compatibility
 
 # :enddoc:
diff --git a/lib/net/http/exceptions.rb b/lib/net/http/exceptions.rb
index 6c5d81cb04..0d34526616 100644
--- a/lib/net/http/exceptions.rb
+++ b/lib/net/http/exceptions.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # Net::HTTP exception class.
 # You cannot use Net::HTTPExceptions directly; instead, you must use
 # its subclasses.
diff --git a/lib/net/http/generic_request.rb b/lib/net/http/generic_request.rb
index 9b7d28757d..19602da27c 100644
--- a/lib/net/http/generic_request.rb
+++ b/lib/net/http/generic_request.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # HTTPGenericRequest is the parent of the HTTPRequest class.
 # Do not use this directly; use a subclass of HTTPRequest.
 #
diff --git a/lib/net/http/header.rb b/lib/net/http/header.rb
index 8afa32a422..a911d5d255 100644
--- a/lib/net/http/header.rb
+++ b/lib/net/http/header.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # The HTTPHeader module defines methods for reading and writing
 # HTTP headers.
 #
diff --git a/lib/net/http/proxy_delta.rb b/lib/net/http/proxy_delta.rb
index b16c9f1ed8..a2f770ebdb 100644
--- a/lib/net/http/proxy_delta.rb
+++ b/lib/net/http/proxy_delta.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 module Net::HTTP::ProxyDelta   #:nodoc: internal use only
   private
 
diff --git a/lib/net/http/request.rb b/lib/net/http/request.rb
index e8b0f48fcc..1e86f3e4b4 100644
--- a/lib/net/http/request.rb
+++ b/lib/net/http/request.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # HTTP request class.
 # This class wraps together the request header and the request path.
 # You cannot use this class directly. Instead, you should use one of its
diff --git a/lib/net/http/requests.rb b/lib/net/http/requests.rb
index c1f8360479..d4c80a3812 100644
--- a/lib/net/http/requests.rb
+++ b/lib/net/http/requests.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # HTTP/1.1 methods --- RFC2616
 #
diff --git a/lib/net/http/response.rb b/lib/net/http/response.rb
index f51d6b1373..349812834f 100644
--- a/lib/net/http/response.rb
+++ b/lib/net/http/response.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # HTTP response class.
 #
 # This class wraps together the response header and the response body (the
diff --git a/lib/net/http/responses.rb b/lib/net/http/responses.rb
index 284bfcfe7f..a5b8ddc68b 100644
--- a/lib/net/http/responses.rb
+++ b/lib/net/http/responses.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # :stopdoc:
 class Net::HTTPUnknownResponse < Net::HTTPResponse
   HAS_BODY = true