diff --git a/factory_bot.gemspec b/factory_bot.gemspec
index e6123150..6ce1c2e9 100644
--- a/factory_bot.gemspec
+++ b/factory_bot.gemspec
@@ -27,7 +27,7 @@ Gem::Specification.new do |s|
   }
 
   s.add_dependency("activesupport", ">= 5.0.0")
-  s.add_dependency("observer") if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('3.3')
+  s.add_dependency("observer") if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("3.3")
 
   s.add_development_dependency("activerecord")
   s.add_development_dependency("appraisal")