--- debugger.gemspec.orig	2014-11-29 13:54:11.000000000 +0000
+++ debugger.gemspec	2014-11-29 13:54:46.000000000 +0000
@@ -26,7 +26,6 @@
 
     if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
       s.add_runtime_dependency(%q<columnize>, [">= 0.3.1"])
-      s.add_runtime_dependency(%q<debugger-ruby_core_source>, ["~> 1.2.3"])
       s.add_runtime_dependency(%q<debugger-linecache>, ["~> 1.2.0"])
       s.add_development_dependency(%q<rake>, ["~> 0.9.2.2"])
       s.add_development_dependency(%q<rake-compiler>, ["~> 0.8.0"])