diff --git a/ext/etc/etc.gemspec b/ext/etc/etc.gemspec
index 8c3b21b035..af41091ade 100644
--- a/ext/etc/etc.gemspec
+++ b/ext/etc/etc.gemspec
@@ -44,9 +44,4 @@ Gem::Specification.new do |spec|
   spec.extensions    = %w{ext/etc/extconf.rb}
 
   spec.required_ruby_version = ">= 2.6.0"
-
-  spec.add_development_dependency "bundler"
-  spec.add_development_dependency "rake"
-  spec.add_development_dependency "rake-compiler"
-  spec.add_development_dependency "test-unit"
 end