8 files changed, 8 insertions, 0 deletions
diff --git a/test/xmlrpc/test_client.rb b/test/xmlrpc/test_client.rb
index b189728bc6..5a74c5265b 100644
--- a/test/xmlrpc/test_client.rb
+++ b/test/xmlrpc/test_client.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require 'xmlrpc/client'
 require 'net/http'
diff --git a/test/xmlrpc/test_cookie.rb b/test/xmlrpc/test_cookie.rb
index cfcfe4c3f0..32eedca367 100644
--- a/test/xmlrpc/test_cookie.rb
+++ b/test/xmlrpc/test_cookie.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require 'time'
 require 'webrick'
diff --git a/test/xmlrpc/test_datetime.rb b/test/xmlrpc/test_datetime.rb
index d6bb95dfcc..6a46e15f84 100644
--- a/test/xmlrpc/test_datetime.rb
+++ b/test/xmlrpc/test_datetime.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "xmlrpc/datetime"
 
diff --git a/test/xmlrpc/test_features.rb b/test/xmlrpc/test_features.rb
index 48bb0d4c21..ea97ab8a09 100644
--- a/test/xmlrpc/test_features.rb
+++ b/test/xmlrpc/test_features.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "xmlrpc/create"
 require "xmlrpc/parser"
diff --git a/test/xmlrpc/test_marshal.rb b/test/xmlrpc/test_marshal.rb
index 34ddfa9d82..251f9f6f29 100644
--- a/test/xmlrpc/test_marshal.rb
+++ b/test/xmlrpc/test_marshal.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "xmlrpc/marshal"
 
diff --git a/test/xmlrpc/test_parser.rb b/test/xmlrpc/test_parser.rb
index 5591645cd4..880044284c 100644
--- a/test/xmlrpc/test_parser.rb
+++ b/test/xmlrpc/test_parser.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require 'xmlrpc/datetime'
 require "xmlrpc/parser"
diff --git a/test/xmlrpc/test_webrick_server.rb b/test/xmlrpc/test_webrick_server.rb
index bc102390c3..268a01382d 100644
--- a/test/xmlrpc/test_webrick_server.rb
+++ b/test/xmlrpc/test_webrick_server.rb
@@ -1,4 +1,5 @@
 # coding: utf-8
+# frozen_string_literal: false
 
 require 'test/unit'
 require 'webrick'
diff --git a/test/xmlrpc/webrick_testing.rb b/test/xmlrpc/webrick_testing.rb
index 37c0b69a74..ff287f7024 100644
--- a/test/xmlrpc/webrick_testing.rb
+++ b/test/xmlrpc/webrick_testing.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'timeout'
 
 module TestXMLRPC