diff --git a/.gitignore b/.gitignore
index 8ab55b8..6d09bed 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,3 +20,4 @@ doc/
 log.txt
 videowriter_result.avi
 examples/contours/rotated-boxes-with-detected-bounding-rectangles.jpg
+Gemfile.lock
diff --git a/Gemfile.lock b/Gemfile.lock
deleted file mode 100644
index 63a2acb..0000000
--- a/Gemfile.lock
+++ /dev/null
@@ -1,28 +0,0 @@
-GEM
-  remote: http://rubygems.org/
-  specs:
-    diff-lcs (1.1.3)
-    hoe (2.12.5)
-      rake (~> 0.8)
-    hoe-gemspec (1.0.0)
-      hoe (>= 2.2.0)
-    rake (0.9.2.2)
-    rake-compiler (0.7.9)
-      rake
-    rspec (2.7.0)
-      rspec-core (~> 2.7.0)
-      rspec-expectations (~> 2.7.0)
-      rspec-mocks (~> 2.7.0)
-    rspec-core (2.7.1)
-    rspec-expectations (2.7.0)
-      diff-lcs (~> 1.1.2)
-    rspec-mocks (2.7.0)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  hoe
-  hoe-gemspec
-  rake-compiler
-  rspec