Cargo.lock in faster_path-0.2.1 vs Cargo.lock in faster_path-0.2.2

@@ -1,9 +1,10 @@
 [root]
 name = "faster_path"
 version = "0.0.1"
 dependencies = [
  "array_tool 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ruby-sys 0.2.20 (registry+https://github.com/rust-lang/crates.io-index)",
  "ruru 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "array_tool"