diff --git a/Cargo.lock b/Cargo.lock
index d5950f4..87ebcdf 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -54,7 +54,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b1e692897359247cc6bb902933361652380af0f1b7651ae5c5013407f30e109e"
 dependencies = [
  "backtrace-sys",
- "cfg-if",
+ "cfg-if 0.1.10",
  "libc",
  "rustc-demangle",
 ]
@@ -104,6 +104,12 @@ version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
 [[package]]
 name = "clap"
 version = "2.33.3"
@@ -144,7 +150,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "058ed274caafc1f60c4997b5fc07bf7dc7cca454af7c6e81edffe5f33f70dace"
 dependencies = [
  "autocfg",
- "cfg-if",
+ "cfg-if 0.1.10",
  "crossbeam-utils",
  "lazy_static",
  "maybe-uninit",
@@ -158,7 +164,7 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c695eeca1e7173472a32221542ae469b3e9aac3a4fc81f7696bcad82029493db"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "crossbeam-utils",
 ]
 
@@ -169,7 +175,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3c7c73a2d1e9fc0886a08b93e98eb643461230d5f1925e4036204d5f2e261a8"
 dependencies = [
  "autocfg",
- "cfg-if",
+ "cfg-if 0.1.10",
  "lazy_static",
 ]
 
@@ -179,7 +185,7 @@ version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "551a778172a450d7fc12e629ca3b0428d00f6afa9a43da1b630d54604e97371c"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "dirs-sys",
 ]
 
@@ -189,7 +195,7 @@ version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "13aea89a5c93364a98e9b37b2fa237effbb694d5cfe01c5b70941f7eb087d5e3"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "dirs-sys",
 ]
 
@@ -199,7 +205,7 @@ version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "afa0b23de8fd801745c471deffa6e12d248f962c9fd4b4c33787b055599bde7b"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "libc",
  "redox_users",
  "winapi",
@@ -267,9 +273,20 @@ version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7abc8dd8451921606d809ba32e95b6111925cd2906060d2dcc29c070220503eb"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "libc",
- "wasi",
+ "wasi 0.9.0+wasi-snapshot-preview1",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4060f4657be78b8e766215b02b18a2e862d83745545de804638e2b545e81aee6"
+dependencies = [
+ "cfg-if 1.0.0",
+ "libc",
+ "wasi 0.10.1+wasi-snapshot-preview1",
 ]
 
 [[package]]
@@ -326,7 +343,7 @@ version = "0.4.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4fabed175da42fed1fa0746b0ea71f412aa9d35e76e95e59b192c64b9dc2bf8b"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
 ]
 
 [[package]]
@@ -362,9 +379,9 @@ dependencies = [
 
 [[package]]
 name = "ppv-lite86"
-version = "0.2.6"
+version = "0.2.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "74490b50b9fbe561ac330df47c08f3f33073d2d00c150f719147d7c54522fa1b"
+checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
 
 [[package]]
 name = "proc-macro2"
@@ -392,11 +409,10 @@ dependencies = [
 
 [[package]]
 name = "rand"
-version = "0.7.3"
+version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
+checksum = "18519b42a40024d661e1714153e9ad0c3de27cd495760ceb09710920f1098b1e"
 dependencies = [
- "getrandom",
  "libc",
  "rand_chacha",
  "rand_core",
@@ -405,9 +421,9 @@ dependencies = [
 
 [[package]]
 name = "rand_chacha"
-version = "0.2.2"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f4c8ed856279c9737206bf725bf36935d8666ead7aa69b52be55af369d193402"
+checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
 dependencies = [
  "ppv-lite86",
  "rand_core",
@@ -415,18 +431,18 @@ dependencies = [
 
 [[package]]
 name = "rand_core"
-version = "0.5.1"
+version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
+checksum = "c026d7df8b298d90ccbbc5190bd04d85e159eaf5576caeacf8741da93ccbd2e5"
 dependencies = [
- "getrandom",
+ "getrandom 0.2.1",
 ]
 
 [[package]]
 name = "rand_hc"
-version = "0.2.0"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
+checksum = "3190ef7066a446f2e7f42e239d161e905420ccab01eb967c9eb27d21b2322a73"
 dependencies = [
  "rand_core",
 ]
@@ -467,7 +483,7 @@ version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09b23093265f8d200fa7b4c2c76297f47e681c655f6f1285a8780d6a022f7431"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.14",
  "redox_syscall",
  "rust-argon2",
 ]
@@ -560,7 +576,7 @@ version = "0.33.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2e1deb61ff274d29fb985017d4611d4004b113676eaa9c06754194caf82094e"
 dependencies = [
- "cfg-if",
+ "cfg-if 0.1.10",
  "libc",
 ]
 
@@ -672,6 +688,12 @@ version = "0.9.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 
+[[package]]
+name = "wasi"
+version = "0.10.1+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "93c6c3420963c5c64bca373b25e77acb562081b9bb4dd5bb864187742186cea9"
+
 [[package]]
 name = "winapi"
 version = "0.3.8"
diff --git a/Cargo.toml b/Cargo.toml
index 5bfc6b9..ea418d4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,7 @@ envy = "0.4.1"
 glob = "0.3.0"
 imagesize = "0.8.1"
 log = "0.4.11"
-rand = "0.7.3"
+rand = "0.8.2"
 rayon = "1.3.0"
 serde = "1.0.106"
 serde_derive = "1.0.106"