diff --git a/Cargo.lock b/Cargo.lock
index 6e1b773b3..9c3aae831 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -44,13 +44,22 @@ dependencies = [
 ]
 
 [[package]]
-name = "arrayvec"
-version = "0.4.12"
+name = "array-init"
+version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cd9fd44efafa8690358b7408d253adf110036b88f55672a933f01d616ad9b1b9"
-dependencies = [
- "nodrop",
-]
+checksum = "6945cc5422176fc5e602e590c2878d2c2acd9a4fe20a4baa7c28022521698ec6"
+
+[[package]]
+name = "arrayref"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4c527152e37cf757a3f78aae5a06fbeefdb07ccc535c980a3208ee3060dd544"
+
+[[package]]
+name = "arrayvec"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b"
 
 [[package]]
 name = "atty"
@@ -100,11 +109,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
 
 [[package]]
-name = "blake2-rfc"
-version = "0.2.18"
+name = "blake2b_simd"
+version = "0.5.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d6d530bdd2d52966a6d03b7a964add7ae1a288d25214066fd4b600f0f796400"
+checksum = "afa748e348ad3be8263be728124b24a24f268266f6f5d58af9d75f6a40b5c587"
 dependencies = [
+ "arrayref",
  "arrayvec",
  "constant_time_eq",
 ]
@@ -2029,7 +2039,7 @@ dependencies = [
 name = "uu_hashsum"
 version = "0.0.6"
 dependencies = [
- "blake2-rfc",
+ "blake2b_simd",
  "clap",
  "digest",
  "hex",
diff --git a/src/uu/hashsum/Cargo.toml b/src/uu/hashsum/Cargo.toml
index 04a22cac7..11388ebf8 100644
--- a/src/uu/hashsum/Cargo.toml
+++ b/src/uu/hashsum/Cargo.toml
@@ -25,7 +25,7 @@ regex-syntax = "0.6.7"
 sha1 = "0.6.0"
 sha2 = "0.6.0"
 sha3 = "0.6.0"
-blake2-rfc = "0.2.18"
+blake2b_simd = "0.5.11"
 uucore = { version=">=0.0.8", package="uucore", path="../../uucore" }
 uucore_procs = { version=">=0.0.5", package="uucore_procs", path="../../uucore_procs" }
 
diff --git a/src/uu/hashsum/src/digest.rs b/src/uu/hashsum/src/digest.rs
index 218de0a36..25bc7f4c3 100644
--- a/src/uu/hashsum/src/digest.rs
+++ b/src/uu/hashsum/src/digest.rs
@@ -1,4 +1,3 @@
-extern crate blake2_rfc;
 extern crate digest;
 extern crate md5;
 extern crate sha1;
@@ -49,9 +48,9 @@ impl Digest for md5::Context {
     }
 }
 
-impl Digest for blake2_rfc::blake2b::Blake2b {
+impl Digest for blake2b_simd::State {
     fn new() -> Self {
-        blake2_rfc::blake2b::Blake2b::new(64)
+        Self::new()
     }
 
     fn input(&mut self, input: &[u8]) {
@@ -59,12 +58,12 @@ impl Digest for blake2_rfc::blake2b::Blake2b {
     }
 
     fn result(&mut self, out: &mut [u8]) {
-        let hash_result = &self.clone().finalize();
+        let hash_result = &self.finalize();
         out.copy_from_slice(&hash_result.as_bytes());
     }
 
     fn reset(&mut self) {
-        *self = blake2_rfc::blake2b::Blake2b::new(64);
+        *self = Self::new();
     }
 
     fn output_bits(&self) -> usize {
diff --git a/src/uu/hashsum/src/hashsum.rs b/src/uu/hashsum/src/hashsum.rs
index b39b5788c..9822ca3fa 100644
--- a/src/uu/hashsum/src/hashsum.rs
+++ b/src/uu/hashsum/src/hashsum.rs
@@ -19,7 +19,6 @@ mod digest;
 
 use self::digest::Digest;
 
-use blake2_rfc::blake2b::Blake2b;
 use clap::{App, Arg, ArgMatches};
 use hex::ToHex;
 use md5::Context as Md5;
@@ -85,7 +84,11 @@ fn detect_algo<'a>(
         "sha256sum" => ("SHA256", Box::new(Sha256::new()) as Box<dyn Digest>, 256),
         "sha384sum" => ("SHA384", Box::new(Sha384::new()) as Box<dyn Digest>, 384),
         "sha512sum" => ("SHA512", Box::new(Sha512::new()) as Box<dyn Digest>, 512),
-        "b2sum" => ("BLAKE2", Box::new(Blake2b::new(64)) as Box<dyn Digest>, 512),
+        "b2sum" => (
+            "BLAKE2",
+            Box::new(blake2b_simd::State::new()) as Box<dyn Digest>,
+            512,
+        ),
         "sha3sum" => match matches.value_of("bits") {
             Some(bits_str) => match (&bits_str).parse::<usize>() {
                 Ok(224) => (
@@ -187,7 +190,7 @@ fn detect_algo<'a>(
                     set_or_crash("SHA512", Box::new(Sha512::new()), 512)
                 }
                 if matches.is_present("b2sum") {
-                    set_or_crash("BLAKE2", Box::new(Blake2b::new(64)), 512)
+                    set_or_crash("BLAKE2", Box::new(blake2b_simd::State::new()), 512)
                 }
                 if matches.is_present("sha3") {
                     match matches.value_of("bits") {