diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5990c5f..a07e09f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 3.0.0
+
+* Update `rand_core` to `0.6`.  Because traits from `rand_core` are part of the
+  public API, this is technically a breaking change, but there are no other
+  changes to Merlin's API.
+
 ## 2.0.1
 
 * Update repository, add `html_root_url`, update dev-dependencies.
diff --git a/Cargo.toml b/Cargo.toml
index cc7216f..aaecd59 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,7 +4,7 @@ name = "merlin"
 # - update CHANGELOG
 # - update html_root_url
 # - update README if required by semver
-version = "2.0.1"
+version = "3.0.0"
 authors = ["Henry de Valence <hdevalence@hdevalence.ca>"]
 edition = "2018"
 readme = "README.md"
@@ -25,13 +25,13 @@ features = ["nightly"]
 keccak = { version = "0.1.0", default-features = false }
 byteorder = { version = "1.2.4", default-features = false }
 zeroize = { version = "1", default-features = false, features = ["zeroize_derive"] }
-rand_core = { version = "0.5", default-features = false }
+rand_core = { version = "0.6", default-features = false }
 hex = {version = "0.3", default-features = false, optional = true}
 
 [dev-dependencies]
 strobe-rs = "0.5"
-curve25519-dalek = { version = "3", package = "curve25519-dalek-ng" }
-rand_chacha = "0.2"
+curve25519-dalek = { version = "4", package = "curve25519-dalek-ng" }
+rand_chacha = "0.3"
 
 [features]
 default = ["std"]
diff --git a/src/lib.rs b/src/lib.rs
index b861c5f..21a8be4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,7 +1,7 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 #![cfg_attr(feature = "nightly", feature(external_doc))]
 #![cfg_attr(feature = "nightly", doc(include = "../README.md"))]
-#![doc(html_root_url = "https://docs.rs/merlin/2.0.1")]
+#![doc(html_root_url = "https://docs.rs/merlin/3.0.0")]
 // put this after the #![doc(..)] so it appears as a footer:
 //! Note that docs will only build on nightly Rust until
 //! [RFC 1990 stabilizes](https://github.com/rust-lang/rust/issues/44732).