diff --git a/__crypto/jose-test/src/jose.rs b/__crypto/jose-test/src/jose.rs
index aa08f6c..7ca3376 100644
--- a/__crypto/jose-test/src/jose.rs
+++ b/__crypto/jose-test/src/jose.rs
@@ -8,8 +8,7 @@ use josekit::jwe::alg::rsaes::RsaesJweAlgorithm;
 use josekit::jwe::JweHeader;
 use josekit::jwk::alg::rsa::RsaKeyPair;
 use josekit::jwk::Jwk;
-use rand::random;
-use rand::rngs::{OsRng, ThreadRng};
+use rand::{random, thread_rng};
 use rsa::{Oaep, RsaPrivateKey, RsaPublicKey};
 use rust_util::{opt_result, simple_error, XResult};
 use serde::{Deserialize, Serialize};
@@ -68,7 +67,7 @@ const JWE_ALG_RSA_OAEP: &str = "RSA-OAEP";
 const JWE_DOT: &str = ".";
 
 pub fn generate_rsa_key_2(bits: u32) -> XResult<RsaPrivateKey> {
-    let mut rng = OsRng::default();
+    let mut rng = thread_rng();
     Ok(RsaPrivateKey::new(&mut rng, bits as usize)?)
 }
 
@@ -84,7 +83,7 @@ pub fn serialize_jwe_rsa_2(payload: &[u8], rsa_public_key: &RsaPublicKey) -> XRe
         version: None,
     };
     serialize_jwe_fn(&header, payload, |data_key| -> XResult<Vec<u8>> {
-        let mut r = ThreadRng::default();
+        let mut r = thread_rng();
         Ok(opt_result!(rsa_public_key.encrypt(&mut r, Oaep::new::<Sha1>(), data_key), "Wrap key failed: {}"))
     })
 }