Ignoring Gemfile.lock file.
diff --git a/.gitignore b/.gitignore
index cf05a2c..9a1dc00 100644
--- a/.gitignore
+++ b/.gitignore
@@ -45,6 +45,9 @@
 # Makefile's cache
 cache.mk
 
+# Ruby's local gem information
+Gemfile.lock
+
 # Temporary test reports
 report.xml
 latency_trace.txt