diff --git a/Cargo.toml b/Cargo.toml
index a81e8e6a..438b163b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,24 +12,24 @@ keywords = ["cryptography", "crypto", "ristretto", "zero-knowledge", "bulletproo
 description = "A pure-Rust implementation of Bulletproofs using Ristretto"
 
 [dependencies]
-curve25519-dalek = { version = "^1.2.3", default-features = false, features = ["u64_backend", "nightly", "serde", "alloc"] }
+curve25519-dalek = { version = "2", default-features = false, features = ["u64_backend", "nightly", "serde", "alloc"] }
 subtle = { version = "2", default-features = false }
 sha3 = { version = "0.8", default-features = false }
 digest = { version = "0.8", default-features = false }
-rand_core = { version = "0.4", default-features = false, features = ["alloc"] }
-rand = { version = "0.6", default-features = false, optional = true }
+rand_core = { version = "0.5", default-features = false, features = ["alloc"] }
+rand = { version = "0.7", default-features = false, optional = true }
 byteorder = { version = "1", default-features = false }
 serde = { version = "1", default-features = false, features = ["alloc"] }
 serde_derive = { version = "1", default-features = false }
 failure = { version = "0.1", default-features = false, features = ["derive"] }
-merlin = { version = "1.2", default-features = false }
+merlin = { version = "2", default-features = false }
 clear_on_drop = { version = "0.2", default-features = false, features = ["nightly"] }
 
 [dev-dependencies]
 hex = "0.3"
 criterion = "0.2"
 bincode = "1"
-rand_chacha = "0.1"
+rand_chacha = "0.2"
 
 [features]
 default = ["std", "avx2_backend"]
diff --git a/tests/range_proof.rs b/tests/range_proof.rs
index 339440f3..3e60d7ad 100644
--- a/tests/range_proof.rs
+++ b/tests/range_proof.rs
@@ -1,5 +1,5 @@
-extern crate rand;
-use rand::SeedableRng;
+extern crate rand_core;
+use rand_core::SeedableRng;
 
 extern crate rand_chacha;
 use rand_chacha::ChaChaRng;