diff --git a/Cargo.toml b/Cargo.toml
index a637f75..6a980b0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,8 +12,8 @@ categories = ["cryptography", "algorithms"]
 readme = "README.md"
 
 [dependencies]
-ring = "^0.12.0"
-rand = "^0.3.0"
+ring = "^0.13.0"
+rand = "^0.5.0"
 
 [package.metadata.release]
 sign-commit = true
diff --git a/src/lib.rs b/src/lib.rs
index 22b4603..ecde70a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -8,7 +8,7 @@ extern crate rand;
 extern crate ring;
 
 use rand::OsRng;
-use rand::Rng;
+use rand::RngCore;
 use ring::digest::{Algorithm, Context};
 use std::cmp::Ordering;
 use std::hash::{Hash, Hasher};
diff --git a/src/tests.rs b/src/tests.rs
index ec834b0..3fbe53b 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -83,6 +83,7 @@ fn test_serialization() {
     assert_eq!(pub_key.zero_values, recovered_pub_key.zero_values);
 }
 
+#[test]
 fn test_serialization_wrong_size_key() {
     let pub_key = PrivateKey::new(digest_512).public_key();
     let mut too_short = pub_key.to_bytes();