diff --git a/.gitignore b/.gitignore
index 41f52049..8394ee1d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 coverage
 pkg
 rdoc
+Gemfile.lock
diff --git a/Gemfile.lock b/Gemfile.lock
deleted file mode 100644
index 01482655..00000000
--- a/Gemfile.lock
+++ /dev/null
@@ -1,32 +0,0 @@
-PATH
-  remote: .
-  specs:
-    git (1.2.6)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    columnize (0.3.6)
-    json (1.7.7)
-    linecache (0.46)
-      rbx-require-relative (> 0.0.4)
-    rbx-require-relative (0.0.9)
-    rdoc (4.0.1)
-      json (~> 1.4)
-    ruby-debug (0.10.4)
-      columnize (>= 0.1)
-      ruby-debug-base (~> 0.10.4.0)
-    ruby-debug-base (0.10.4)
-      linecache (>= 0.3)
-    ruby-prof (0.13.0)
-    test-unit (2.5.4)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  git!
-  rdoc
-  ruby-debug
-  ruby-prof
-  test-unit
diff --git a/git.gemspec b/git.gemspec
index db324e55..9bccd282 100644
--- a/git.gemspec
+++ b/git.gemspec
@@ -17,7 +17,6 @@ Gem::Specification.new do |s|
   s.requirements = ['git 1.6.0.0, or greater']
 
   s.add_development_dependency 'rake'
-  s.add_development_dependency 'ruby-debug'
   s.add_development_dependency 'rdoc'
   s.add_development_dependency 'ruby-prof'
   s.add_development_dependency 'test-unit'