--- specifications/ferret-0.11.8.4.gemspec
+++ specifications/ferret-0.11.8.4.gemspec
@@ -24,7 +24,7 @@
     s.specification_version = 3
 
     if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
-      s.add_runtime_dependency(%q<rake>, [">= 0"])
+      s.add_development_dependency(%q<rake>, [">= 0"])
     else
       s.add_dependency(%q<rake>, [">= 0"])
     end