diff --git a/Cargo.toml b/Cargo.toml
index 637341706..ff2a2f8db 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,4 +12,4 @@ quickcheck = "0.8"
 derive_more = "0.15"
 bigint = "4"
 byteorder = "1"
-blake2 = { package = "blake2-rfc", git = "https://github.com/gtank/blake2-rfc.git", rev = "7a5b5fc99ae483a0043db7547fb79a6fa44b88a9" }
+blake2 = { package = "blake2b_simd", version = "0.5" }
diff --git a/src/node_data.rs b/src/node_data.rs
index dcc8ded09..0adc0f2f6 100644
--- a/src/node_data.rs
+++ b/src/node_data.rs
@@ -1,6 +1,6 @@
 use byteorder::{LittleEndian, ReadBytesExt, WriteBytesExt, ByteOrder};
 use bigint::U256;
-use blake2::blake2b::Blake2b;
+use blake2::Params as Blake2Params;
 
 pub const MAX_NODE_DATA_SIZE: usize = 32 + 4 + 4 + 4 + 4 + 32 + 32 + 32 + 9 + 9 + 9; // 171
 
@@ -23,10 +23,14 @@ pub struct NodeData {
 }
 
 fn blake2b_personal(personalization: &[u8], input: &[u8]) -> [u8; 32] {
-    let mut hasher = Blake2b::with_params(32, &[], &[], personalization);
-    hasher.update(input);
+    let hash_result = Blake2Params::new()
+        .hash_length(32)
+        .personal(personalization)
+        .to_state()
+        .update(input)
+        .finalize();
     let mut result = [0u8; 32];
-    result.copy_from_slice(hasher.finalize().as_bytes());
+    result.copy_from_slice(hash_result.as_bytes());
     result
 }