diff --git a/Gemfile b/Gemfile
index d383212..9c3026a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,9 +3,3 @@ source "https://rubygems.org"
 # Specify your gem's dependencies in hsmr.gemspec
 gemspec
 
-#group :development do
-#  gem 'rb-fsevent', :require => false if RUBY_PLATFORM =~ /darwin/i
-#  gem 'growl', :require => false if RUBY_PLATFORM =~ /darwin/i
-#  gem 'guard-test'
-#  gem 'factory_girl'
-#end
diff --git a/Gemfile.lock b/Gemfile.lock
index 047d3fe..0b3d375 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -4,41 +4,40 @@ PATH
     hsmr (0.0.1)
 
 GEM
-  remote: http://rubygems.org/
+  remote: https://rubygems.org/
   specs:
-    activesupport (6.0.2.1)
+    activesupport (6.1.4)
       concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-      zeitwerk (~> 2.2)
-    concurrent-ruby (1.1.6)
-    factory_girl (4.9.0)
-      activesupport (>= 3.0.0)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+      zeitwerk (~> 2.3)
+    concurrent-ruby (1.1.9)
+    factory_bot (6.2.0)
+      activesupport (>= 5.0.0)
     guard-compat (1.2.1)
     guard-test (2.0.8)
       guard-compat (~> 1.2)
       test-unit (~> 3.0)
-    i18n (1.8.2)
+    i18n (1.8.10)
       concurrent-ruby (~> 1.0)
-    minitest (5.14.0)
-    power_assert (1.1.6)
-    rake (13.0.1)
-    test-unit (3.3.5)
+    minitest (5.14.4)
+    power_assert (2.0.0)
+    rake (13.0.3)
+    test-unit (3.4.4)
       power_assert
-    thread_safe (0.3.6)
-    tzinfo (1.2.6)
-      thread_safe (~> 0.1)
-    zeitwerk (2.2.2)
+    tzinfo (2.0.4)
+      concurrent-ruby (~> 1.0)
+    zeitwerk (2.4.2)
 
 PLATFORMS
-  ruby
+  x86_64-darwin-20
 
 DEPENDENCIES
-  factory_girl
+  factory_bot
   guard-test
   hsmr!
   rake
 
 BUNDLED WITH
-   2.1.2
+   2.2.17
diff --git a/hsmr.gemspec b/hsmr.gemspec
index 82056f6..dd61b7b 100644
--- a/hsmr.gemspec
+++ b/hsmr.gemspec
@@ -24,5 +24,5 @@ Gem::Specification.new do |s|
   
   s.add_development_dependency "rake"
   s.add_development_dependency "guard-test"
-  s.add_development_dependency "factory_girl"
+  s.add_development_dependency "factory_bot"
 end