diff --git a/sprockets-vendor_gems.gemspec b/sprockets-vendor_gems.gemspec
index 0f7bb9b..82faadb 100644
--- a/sprockets-vendor_gems.gemspec
+++ b/sprockets-vendor_gems.gemspec
@@ -12,5 +12,7 @@ Gem::Specification.new do |gem|
   gem.name          = "sprockets-vendor_gems"
   gem.require_paths = ["lib"]
   gem.version       = '1.0.0'
+
+  gem.required_rubygems_version = '1.8.0'
 end