1 files changed, 1 insertions, 1 deletions
diff --git a/Rakefile b/Rakefile
index 0da73d0..037d02c 100644
--- a/Rakefile
+++ b/Rakefile
@@ -7,7 +7,7 @@ require 'rbconfig'
  include Config
  
  require 'rake/clean'
-CLOBBER.include Dir['benchmarks/data/*.{dat,log}'], 'doc'
+CLOBBER.include Dir['benchmarks/data/*.{dat,log}'], 'doc', 'Gemfile.lock'
  CLEAN.include FileList['diagrams/*.*'], 'doc', 'coverage', 'tmp',
    FileList["ext/**/{Makefile,mkmf.log}"], 'build', 'dist', FileList['**/*.rbc'],
    FileList["{ext,lib}/**/*.{so,bundle,#{CONFIG['DLEXT']},o,obj,pdb,lib,manifest,exp,def,jar,class,dSYM}"],