diff --git a/crates/curve/Cargo.toml b/crates/curve/Cargo.toml
index bf4a08f..eeeff0c 100644
--- a/crates/curve/Cargo.toml
+++ b/crates/curve/Cargo.toml
@@ -14,7 +14,7 @@ parity-scale-codec = { version = "2.1", default-features = false, features = ["d
 
 ## Arkworks
 # https://github.com/arkworks-rs/utils
-ark-std = { version = "0.3", default-features = false }
+ark-std = { version = "0.4", default-features = false }
 # https://github.com/arkworks-rs/curves
 ark-bls12-377 = { version = "0.3", default-features = false, features = ["curve"] }
 ark-bls12-381 = { version = "0.3", default-features = false, features = ["curve"] }
diff --git a/tests/Cargo.toml b/tests/Cargo.toml
index 3657957..bf16035 100644
--- a/tests/Cargo.toml
+++ b/tests/Cargo.toml
@@ -14,7 +14,7 @@ rand = { version = "0.8", default-features = false }
 parity-scale-codec = { version = "2.1", default-features = false, features = [ "derive" ] }
 
 ## Arkworks
-ark-std = { version = "0.3", default-features = false }
+ark-std = { version = "0.4", default-features = false }
 ark-bls12-377 = { version = "0.3", default-features = false, features = ["curve"] }
 ark-bls12-381 = { version = "0.3", default-features = false, features = ["curve"] }
 ark-bn254 = { version = "0.3", default-features = false, features = ["curve"] }