diff --git a/Cargo.lock b/Cargo.lock
index c11ab18..329e366 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -28,7 +28,7 @@ name = "brainfuck_rs"
 version = "2.0.0"
 dependencies = [
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "nom 4.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nom 4.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -66,7 +66,7 @@ dependencies = [
 
 [[package]]
 name = "nom"
-version = "4.2.0"
+version = "4.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "memchr 2.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -151,7 +151,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b957d88f4b6a63b9d70d5f454ac8011819c6efa7727858f458ab71c756ce2d3e"
 "checksum libc 0.2.48 (registry+https://github.com/rust-lang/crates.io-index)" = "e962c7641008ac010fa60a7dfdc1712449f29c44ef2d4702394aea943ee75047"
 "checksum memchr 2.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e1dd4eaac298c32ce07eb6ed9242eda7d82955b9170b7d6db59b2e02cc63fcb8"
-"checksum nom 4.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b30adc557058ce00c9d0d7cb3c6e0b5bc6f36e2e2eabe74b0ba726d194abd588"
+"checksum nom 4.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4836e9d6036552017e107edc598c97b2dee245161ff1b1ad4af215004774b354"
 "checksum redox_syscall 0.1.51 (registry+https://github.com/rust-lang/crates.io-index)" = "423e376fffca3dfa06c9e9790a9ccd282fafb3cc6e6397d01dbf64f9bacc6b85"
 "checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
 "checksum strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb4f380125926a99e52bc279241539c018323fab05ad6368b56f93d9369ff550"