diff --git a/Cargo.toml b/Cargo.toml
index 9e3169d..8d25768 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,7 @@ time = "*"
 rustc-serialize = "0.3"
 #secp256k1 = { version = "0.9.2", features = ["rand"] }
 secp256k1 = { git = "https://github.com/jakinyele/rust-secp256k1", branch = "master", features = ["rand"] }
-curve25519-dalek = "^0.18"
+curve25519-dalek = "^0.19"
 bulletproofs = { git = "https://github.com/dalek-cryptography/bulletproofs", branch = "main" }
 sha2 = "0.7.1"
 
diff --git a/src/lib.rs b/src/lib.rs
index 45c2ffb..9e74dbe 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -883,7 +883,7 @@ pub mod bidirectional {
                                                    &mut osrng, value, &val_blinding,
                                                    pp.range_proof_bits).unwrap();
         let pg = &pp.range_proof_gens.pedersen_gens;
-        let value_cm = pg.commit(Scalar::from_u64(value), val_blinding);
+        let value_cm = pg.commit(Scalar::from(value), val_blinding);
 
         let proof_rp = ProofVB { range_proof: range_proof, value_commitment: value_cm };