diff --git a/Gemfile.lock b/Gemfile.lock
index 197b92bc5..b81447191 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -189,9 +189,9 @@ GEM
       msgpack
     dead_end (1.1.7)
     debase-ruby_core_source (0.10.16)
-    debug (1.5.0)
+    debug (1.6.0)
       irb (>= 1.3.6)
-      reline (>= 0.2.7)
+      reline (>= 0.3.1)
     derailed_benchmarks (2.1.1)
       benchmark-ips (~> 2)
       dead_end
diff --git a/vendor/cache/debug-1.5.0.gem b/vendor/cache/debug-1.5.0.gem
deleted file mode 100644
index b7a8065f5..000000000
Binary files a/vendor/cache/debug-1.5.0.gem and /dev/null differ
diff --git a/vendor/cache/debug-1.6.0.gem b/vendor/cache/debug-1.6.0.gem
new file mode 100644
index 000000000..96cd35e77
Binary files /dev/null and b/vendor/cache/debug-1.6.0.gem differ