diff --git a/Cargo.toml b/Cargo.toml
index 30b132ca..f9460f0f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ aes = "0.7"
 arrayvec = "0.7.0"
 bigint = "4"
 bitvec = "0.22"
-blake2b_simd = "0.5"
+blake2b_simd = "1"
 ff = "0.11"
 fpe = "0.5"
 group = "0.11"