diff --git a/Cargo.lock b/Cargo.lock
index b13fbc5..f3106c2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -81,7 +81,7 @@ dependencies = [
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sdl2 0.32.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "snafu 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "snafu 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "spin_sleep 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "structopt 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -472,17 +472,17 @@ dependencies = [
 
 [[package]]
 name = "snafu"
-version = "0.6.0"
+version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "backtrace 0.3.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "doc-comment 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "snafu-derive 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "snafu-derive 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "snafu-derive"
-version = "0.6.0"
+version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -706,8 +706,8 @@ dependencies = [
 "checksum rustversion 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c48f91977f4ef3be5358c15d131d3f663f6b4d7a112555bf3bf52ad23b6659e5"
 "checksum sdl2 0.32.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d051a07231e303f5f719da78cb6f7394f6d5b54f733aef5b0b447804a83edd7b"
 "checksum sdl2-sys 0.32.6 (registry+https://github.com/rust-lang/crates.io-index)" = "34e71125077d297d57e4c1acfe8981b5bdfbf5a20e7b589abfdcb33bf1127f86"
-"checksum snafu 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "41207ca11f96a62cd34e6b7fdf73d322b25ae3848eb9d38302169724bb32cf27"
-"checksum snafu-derive 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4c5e338c8b0577457c9dda8e794b6ad7231c96e25b1b0dd5842d52249020c1c0"
+"checksum snafu 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "65929384f863545b67a696ce36499cd045e5dca834aca85c929401d99a920bad"
+"checksum snafu-derive 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c6d2b1d1afd31abf5e72cc8d21e51443e3eb6b24dcda99ad3c048df5524eae80"
 "checksum spin_sleep 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "891836ef5f8a5b9678938d34d75391a3794267806482105ffcd363271980c10c"
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 "checksum structopt 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "884ae79d6aad1e738f4a70dff314203fd498490a63ebc4d03ea83323c40b7b72"