1 files changed, 9 insertions, 1 deletions
diff --git a/lib/bundler/index.rb b/lib/bundler/index.rb
index 013bf14042..79cbb10fc8 100644
--- a/lib/bundler/index.rb
+++ b/lib/bundler/index.rb
@@ -19,7 +19,8 @@ module Bundler
     def initialize_copy(o)
       super
       @cache = {}
-      @specs = @specs.dup
+      @specs = Hash.new { |h,k| h[k] = [] }
+      merge!(o)
     end
 
     def search(query)
@@ -60,6 +61,13 @@ module Bundler
       dup.merge!(other)
     end
 
+    def freeze
+      @specs.each do |k,v|
+        v.freeze
+      end
+      super
+    end
+
   private
 
     def search_by_spec(spec)