diff --git a/Cargo.lock b/Cargo.lock
index c6ace06f..13491899 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -346,7 +346,7 @@ dependencies = [
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "miniz_oxide 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rgb 0.8.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rgb 0.8.20 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "stderrlog 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "wild 2.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -402,8 +402,11 @@ dependencies = [
 
 [[package]]
 name = "rgb"
-version = "0.8.18"
+version = "0.8.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bytemuck 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "rustc_version"
@@ -616,7 +619,7 @@ dependencies = [
 "checksum rayon-core 1.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e92e15d89083484e11353891f1af602cc661426deb9564c298b270c726973280"
 "checksum redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)" = "2439c63f3f6139d1b57529d16bc3b8bb855230c8efcc5d3a896c8bea7c3b1e84"
 "checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
-"checksum rgb 0.8.18 (registry+https://github.com/rust-lang/crates.io-index)" = "6714061b32e0b0527005d5874c28a57d905559fecfacd361462ad0b01e701996"
+"checksum rgb 0.8.20 (registry+https://github.com/rust-lang/crates.io-index)" = "90ef54b45ae131327a88597e2463fee4098ad6c88ba7b6af4b3987db8aad4098"
 "checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
 "checksum scopeguard 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
diff --git a/Cargo.toml b/Cargo.toml
index 93bc71a9..f27008a6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -35,7 +35,7 @@ crc = "^1.2.0"
 itertools = "^0.9.0"
 zopfli = "^0.4.0"
 miniz_oxide = "0.3"
-rgb = "0.8.18"
+rgb = "0.8.20"
 indexmap = { version = "1.4.0", features = ["rayon"] }
 libdeflater = "0.5.0"
 log = "0.4.8"