diff --git a/Cargo.toml b/Cargo.toml
index 27cab8d..58619af 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,15 +12,15 @@ edition = "2021"
 [dependencies]
 base64 = "0.22"
 chacha20 = "0.9"
-constant_time_eq = "0.3"
+constant_time_eq = "0.4"
 hkdf = "0.12"
 hmac = "0.12"
-rand_core = { version = "0.6", features = [ "getrandom" ] }
-secp256k1 = { version = "0.29" }
+rand_core = { version = "0.9", features = [ "os_rng" ] }
+secp256k1 = { version = "0.31" }
 sha2 = "0.10"
-thiserror = "1.0"
+thiserror = "2.0"
 
 [dev-dependencies]
 hex = "0.4"
-secp256k1 = { version = "0.29", features = [ "global-context" ] }
+secp256k1 = { version = "0.31", features = [ "global-context" ] }
 serde_json = "*"
diff --git a/src/error.rs b/src/error.rs
index aba1759..a505307 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -30,6 +30,10 @@ pub enum Error {
     #[error("Message is too long")]
     MessageIsTooLong,
 
+    /// Random source failed
+    #[error("Random source failed")]
+    RandOsError(rand_core::OsError),
+
     /// Unsupported future version
     #[error("Encryption format is not yet supported")]
     UnsupportedFutureVersion,
@@ -42,3 +46,9 @@ pub enum Error {
     #[error("UTF8 Decode: {0}")]
     Utf8Decode(#[from] std::string::FromUtf8Error),
 }
+
+impl From<rand_core::OsError> for Error {
+    fn from(err: rand_core::OsError) -> Self {
+        Error::RandOsError(err)
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
index 483c723..c230e7e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -3,7 +3,7 @@ use chacha20::cipher::{KeyIvInit, StreamCipher};
 use chacha20::ChaCha20;
 use hkdf::Hkdf;
 use hmac::{Hmac, Mac};
-use rand_core::{OsRng, RngCore};
+use rand_core::{OsRng, TryRngCore};
 use secp256k1::ecdh::shared_secret_point;
 use secp256k1::{Parity, PublicKey, SecretKey, XOnlyPublicKey};
 use sha2::Sha256;
@@ -120,7 +120,7 @@ fn encrypt_inner(
         Some(nonce) => nonce.to_owned(),
         None => {
             let mut nonce: [u8; 32] = [0; 32];
-            OsRng.fill_bytes(&mut nonce);
+            OsRng.try_fill_bytes(&mut nonce)?;
             nonce
         }
     };
diff --git a/src/tests.rs b/src/tests.rs
index 9e9edd9..4baae17 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -31,12 +31,12 @@ fn test_valid_get_conversation_key() {
         let sec1 = {
             let sec1hex = vector.get("sec1").unwrap().as_str().unwrap();
             let sec1bytes = hex::decode(sec1hex).unwrap();
-            SecretKey::from_slice(&sec1bytes).unwrap()
+            SecretKey::from_byte_array(sec1bytes.try_into().unwrap()).unwrap()
         };
         let pub2 = {
             let pub2hex = vector.get("pub2").unwrap().as_str().unwrap();
             let pub2bytes = hex::decode(pub2hex).unwrap();
-            XOnlyPublicKey::from_slice(&pub2bytes).unwrap()
+            XOnlyPublicKey::from_byte_array(pub2bytes.try_into().unwrap()).unwrap()
         };
         let conversation_key: [u8; 32] = {
             let ckeyhex = vector.get("conversation_key").unwrap().as_str().unwrap();
@@ -107,12 +107,12 @@ fn test_valid_encrypt_decrypt() {
         let sec1 = {
             let sec1hex = vector.get("sec1").unwrap().as_str().unwrap();
             let sec1bytes = hex::decode(sec1hex).unwrap();
-            SecretKey::from_slice(&sec1bytes).unwrap()
+            SecretKey::from_byte_array(sec1bytes.try_into().unwrap()).unwrap()
         };
         let sec2 = {
             let sec2hex = vector.get("sec2").unwrap().as_str().unwrap();
             let sec2bytes = hex::decode(sec2hex).unwrap();
-            SecretKey::from_slice(&sec2bytes).unwrap()
+            SecretKey::from_byte_array(sec2bytes.try_into().unwrap()).unwrap()
         };
         let conversation_key: [u8; 32] = {
             let ckeyhex = vector.get("conversation_key").unwrap().as_str().unwrap();
@@ -193,12 +193,12 @@ fn test_invalid_get_conversation_key() {
         let sec1result = {
             let sec1hex = vector.get("sec1").unwrap().as_str().unwrap();
             let sec1bytes = hex::decode(sec1hex).unwrap();
-            SecretKey::from_slice(&sec1bytes)
+            SecretKey::from_byte_array(sec1bytes.try_into().unwrap())
         };
         let pub2result = {
             let pub2hex = vector.get("pub2").unwrap().as_str().unwrap();
             let pub2bytes = hex::decode(pub2hex).unwrap();
-            XOnlyPublicKey::from_slice(&pub2bytes)
+            XOnlyPublicKey::from_byte_array(pub2bytes.try_into().unwrap())
         };
         let note = vector.get("note").unwrap().as_str().unwrap();
 
@@ -279,10 +279,10 @@ fn bench_encryption_inner() {
         "3072ab28ed7d5c2e4f5efbdcde5fb11455ab7f976225d1779a1751eb6400411a";
 
     let sec1bytes = hex::decode(SEC1HEX).unwrap();
-    let sec1 = SecretKey::from_slice(&sec1bytes).unwrap();
+    let sec1 = SecretKey::from_byte_array(sec1bytes.try_into().unwrap()).unwrap();
 
     let sec2bytes = hex::decode(SEC2HEX).unwrap();
-    let sec2 = SecretKey::from_slice(&sec2bytes).unwrap();
+    let sec2 = SecretKey::from_byte_array(sec2bytes.try_into().unwrap()).unwrap();
 
     let (pub2, _) = sec2.x_only_public_key(&SECP256K1);