diff --git a/Cargo.toml b/Cargo.toml
index 3a4a652..c75dc3a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,7 +17,7 @@ futures = { version = "0.3.28", default-features = false }
 log = { version = "0.4.17", default-features = false }
 nom = { version = "7.1.3", default-features = false }
 rand = { version = "0.8.5", default-features = false }
-rsa = { version = "0.8.2", default-features = false, features = ["sha2", "std"] }
+rsa = { version = "0.9.0", default-features = false, features = ["sha2", "std"] }
 sha2 = { version = "0.10.6", default-features = false, features = ["asm"] }
 sqlx = { version = "0.6.3", default-features = false, features = ["runtime-tokio-native-tls", "macros", "migrate", "sqlite", "time"] }
 tokio = { version = "1.27.0", default-features = false, features = ["rt-multi-thread", "io-std", "io-util", "macros", "sync", "time", "process"] }
diff --git a/src/algorithm.rs b/src/algorithm.rs
index 0fd63ab..697f515 100644
--- a/src/algorithm.rs
+++ b/src/algorithm.rs
@@ -54,7 +54,7 @@ impl Algorithm {
 			}
 			Self::Rsa2048Sha256 | Self::Rsa3072Sha256 | Self::Rsa4096Sha256 => {
 				let private_key = RsaPrivateKey::from_pkcs8_der(&pk)?;
-				let signing_key = RsaSigningKey::<Sha256>::new_with_prefix(private_key);
+				let signing_key = RsaSigningKey::<Sha256>::new(private_key);
 				let signature = signing_key.sign_prehash(data)?;
 				Ok(signature.to_vec())
 			}