diff --git a/rubygem-stringex-2.8.5-rails61-compati.patch b/rubygem-stringex-2.8.5-rails61-compati.patch
new file mode 100644
index 0000000..4c175ba
--- /dev/null
+++ b/rubygem-stringex-2.8.5-rails61-compati.patch
@@ -0,0 +1,20 @@
+--- stringex-2.8.5/test/unit/acts_as_url/adapter/activerecord.rb.rails61	2021-02-14 21:33:56.962375833 +0900
++++ stringex-2.8.5/test/unit/acts_as_url/adapter/activerecord.rb	2021-02-14 21:35:49.293447097 +0900
+@@ -66,6 +66,6 @@
+   end
+ 
+   def adapter_specific_update(instance, hash)
+-    instance.send :update_attributes!, hash
++    instance.send :update!, hash
+   end
+ end
+--- stringex-2.8.5/test/unit/acts_as_url/adapter/mongoid.rb.rails61	2021-02-14 21:33:56.962375833 +0900
++++ stringex-2.8.5/test/unit/acts_as_url/adapter/mongoid.rb	2021-02-14 21:35:49.293447097 +0900
+@@ -77,6 +77,6 @@
+   end
+ 
+   def adapter_specific_update(instance, hash)
+-    instance.send :update_attributes!, hash
++    instance.send :update!, hash
+   end
+ end
diff --git a/rubygem-stringex.spec b/rubygem-stringex.spec
index 75553f0..d16983e 100644
--- a/rubygem-stringex.spec
+++ b/rubygem-stringex.spec
@@ -3,11 +3,14 @@
 Name:           rubygem-%{gem_name}
 Summary:        Useful extensions to Ruby's String class
 Version:        2.8.5
-Release:        4%{?dist}
+Release:        5%{?dist}
 License:        MIT
 
 URL:            http://github.com/rsl/stringex
 Source0:        https://rubygems.org/gems/%{gem_name}-%{version}.gem
+# DEPRECATION WARNING: update_attributes! is deprecated and will be removed
+# from Rails 6.1 (please, use update! instead)
+Patch1:		rubygem-stringex-2.8.5-rails61-compati.patch
 
 BuildArch:      noarch
 
@@ -40,6 +43,7 @@ Documentation for %{name}.
 
 %prep
 %setup -q -n %{gem_name}-%{version}
+%patch1 -p1
 
 
 %build
@@ -83,6 +87,9 @@ popd
 
 
 %changelog
+* Sun Feb 14 2021 Mamoru TASAKA <mtasaka@fedoraproject.org> - 2.8.5-5
+- Patch to make test suite compatible with rails 6.1.x
+
 * Wed Jan 27 2021 Fedora Release Engineering <releng@fedoraproject.org> - 2.8.5-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild