diff --git a/node/Cargo.toml b/node/Cargo.toml
index f90666f2..b22a7fb6 100644
--- a/node/Cargo.toml
+++ b/node/Cargo.toml
@@ -28,7 +28,7 @@ bit-vec = "0.6"
 blst = "0.3.10"
 ark-bn254 = "0.4.0"
 ark-ec = "0.4.2"
-ark-serialize = "0.4.2"
+ark-serialize = { version = "0.4.2", features = ["std"] }
 num-traits = "0.2.17"
 clap = { version = "4.3.3", features = ["derive"] }
 ed25519-dalek = { version = "2.0.0", features = ["serde", "rand_core"] }
diff --git a/node/libs/crypto/src/bn254/hash.rs b/node/libs/crypto/src/bn254/hash.rs
index ad30f95d..dd7a7b62 100644
--- a/node/libs/crypto/src/bn254/hash.rs
+++ b/node/libs/crypto/src/bn254/hash.rs
@@ -3,7 +3,6 @@
 use ark_bn254::{G1Affine, G1Projective};
 use ark_ec::AffineRepr as _;
 use sha2::Digest as _;
-use tracing::instrument;
 
 /// Hashes an arbitrary message and maps it to an elliptic curve point in G1.
 pub(crate) fn hash_to_g1(msg: &[u8]) -> G1Projective {
diff --git a/node/libs/crypto/src/bn254/mod.rs b/node/libs/crypto/src/bn254/mod.rs
index 99dbfa77..b70bcd72 100644
--- a/node/libs/crypto/src/bn254/mod.rs
+++ b/node/libs/crypto/src/bn254/mod.rs
@@ -1,7 +1,7 @@
 //! BLS signature scheme for the BN254 curve.
 
 use crate::ByteFmt;
-use anyhow::anyhow;
+use anyhow::Context as _;
 use ark_bn254::{Bn254, Fr, G1Projective as G1, G2Projective as G2};
 use ark_ec::{
     pairing::{Pairing as _, PairingOutput},
@@ -43,7 +43,7 @@ impl ByteFmt for SecretKey {
     fn decode(bytes: &[u8]) -> anyhow::Result<Self> {
         Fr::deserialize_compressed(bytes)
             .map(Self)
-            .map_err(|e| anyhow!("failed to decode secret key: {e:?}"))
+            .context("failed to decode secret key")
     }
 
     fn encode(&self) -> Vec<u8> {
@@ -61,7 +61,7 @@ impl ByteFmt for PublicKey {
     fn decode(bytes: &[u8]) -> anyhow::Result<Self> {
         G2::deserialize_compressed(bytes)
             .map(Self)
-            .map_err(|e| anyhow!("failed to decode public key: {e:?}"))
+            .context("failed to decode public key")
     }
 
     fn encode(&self) -> Vec<u8> {
@@ -110,7 +110,7 @@ impl ByteFmt for Signature {
     fn decode(bytes: &[u8]) -> anyhow::Result<Self> {
         G1::deserialize_compressed(bytes)
             .map(Self)
-            .map_err(|e| anyhow!("failed to decode signature: {e:?}"))
+            .context("failed to decode signature")
     }
     fn encode(&self) -> Vec<u8> {
         let mut buf = Vec::new();
@@ -184,7 +184,7 @@ impl ByteFmt for AggregateSignature {
     fn decode(bytes: &[u8]) -> anyhow::Result<Self> {
         G1::deserialize_compressed(bytes)
             .map(Self)
-            .map_err(|e| anyhow!("failed to decode aggregate signature: {e:?}"))
+            .context("failed to decode aggregate signature")
     }
 
     fn encode(&self) -> Vec<u8> {
diff --git a/node/libs/crypto/src/bn254/tests.rs b/node/libs/crypto/src/bn254/tests.rs
index d07afbfa..933b914b 100644
--- a/node/libs/crypto/src/bn254/tests.rs
+++ b/node/libs/crypto/src/bn254/tests.rs
@@ -1,7 +1,9 @@
-use crate::bn254::{AggregateSignature, PublicKey, SecretKey, Signature};
-use rand::{rngs::StdRng, Rng, SeedableRng};
 use std::iter::repeat_with;
 
+use rand::{rngs::StdRng, Rng, SeedableRng};
+
+use crate::bn254::{AggregateSignature, PublicKey, SecretKey, Signature};
+
 #[test]
 fn signature_smoke() {
     let mut rng = StdRng::seed_from_u64(29483920);