diff --git a/Cargo.lock b/Cargo.lock
index c24a341..1328e87 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,10 +1,12 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "atoi"
-version = "1.0.0"
+version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d7c57d12312ff59c811c0643f4d80830505833c9ffaebd193d819392b265be8e"
+checksum = "f28d99ec8bfea296261ca1af174f24225171fea9664ba9003cbebee704810528"
 dependencies = [
  "num-traits",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 183ebf6..5fcb769 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,4 +7,4 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-atoi = "1.0"
+atoi = "2.0"