diff --git a/Appraisals b/Appraisals
index 7fb36d2..d1196de 100644
--- a/Appraisals
+++ b/Appraisals
@@ -1,10 +1,14 @@
 
 appraise "rails_6_1" do
   gem "rails", "~> 6.1.0"
+  # For Ruby 3.4 compatibility until this commit of httpclient is released https://github.com/nahi/httpclient/commit/552a56770689e800ad11a21cd06075064736569f
+  gem 'mutex_m'
 end
 
 appraise "rails_7_0" do
   gem "rails", "~> 7.0.0"
+  # For Ruby 3.4 compatibility until this commit of httpclient is released https://github.com/nahi/httpclient/commit/552a56770689e800ad11a21cd06075064736569f
+  gem 'mutex_m'
 end
 
 appraise "rails_7_1" do
diff --git a/Gemfile b/Gemfile
index 9fd11bf..8ff6b94 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,5 +4,3 @@ gem 'rcov',      :platforms => :mri_18, :group => [:development, :test]
 gem 'simplecov', :platforms => [:jruby, :mri_19, :ruby_19, :mri_20, :rbx], :group => [:development, :test], :require => false
 gem 'jruby-openssl', :platform => :jruby
 gem 'rails'
-# For Ruby 3.4 compatibility until this commit of httpclient is released https://github.com/nahi/httpclient/commit/552a56770689e800ad11a21cd06075064736569f
-gem 'mutex_m'
diff --git a/gemfiles/rails_6_1.gemfile b/gemfiles/rails_6_1.gemfile
index f643618..c70e5ed 100644
--- a/gemfiles/rails_6_1.gemfile
+++ b/gemfiles/rails_6_1.gemfile
@@ -6,5 +6,6 @@ gem "rcov", platforms: :mri_18, group: [:development, :test]
 gem "simplecov", platforms: [:jruby, :mri_19, :ruby_19, :mri_20, :rbx], group: [:development, :test], require: false
 gem "jruby-openssl", platform: :jruby
 gem "rails", "~> 6.1.0"
+gem "mutex_m"
 
 gemspec path: "../"
diff --git a/gemfiles/rails_7_0.gemfile b/gemfiles/rails_7_0.gemfile
index a6f2f82..a39a51a 100644
--- a/gemfiles/rails_7_0.gemfile
+++ b/gemfiles/rails_7_0.gemfile
@@ -6,5 +6,6 @@ gem "rcov", platforms: :mri_18, group: [:development, :test]
 gem "simplecov", platforms: [:jruby, :mri_19, :ruby_19, :mri_20, :rbx], group: [:development, :test], require: false
 gem "jruby-openssl", platform: :jruby
 gem "rails", "~> 7.0.0"
+gem "mutex_m"
 
 gemspec path: "../"