diff --git a/Gemfile.lock b/Gemfile.lock
index 5c71f682b..3aed83172 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -187,7 +187,7 @@ GEM
       msgpack
     dead_end (1.1.7)
     debase-ruby_core_source (0.10.12)
-    debug (1.3.4)
+    debug (1.4.0)
       irb (>= 1.3.6)
       reline (>= 0.2.7)
     derailed_benchmarks (2.1.1)
diff --git a/vendor/cache/debug-1.3.4.gem b/vendor/cache/debug-1.3.4.gem
deleted file mode 100644
index 9758c92e5..000000000
Binary files a/vendor/cache/debug-1.3.4.gem and /dev/null differ
diff --git a/vendor/cache/debug-1.4.0.gem b/vendor/cache/debug-1.4.0.gem
new file mode 100644
index 000000000..0ff3c0723
Binary files /dev/null and b/vendor/cache/debug-1.4.0.gem differ