diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 48f3b04..c4a93f1 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -4,7 +4,7 @@ on:
   push:
     branches: [ '*' ]
   pull_request:
-    branches: [ main, develop, release ]
+    branches: [ main, develop, release, mobilecoin ]
 
 env:
   CARGO_TERM_COLOR: always
@@ -71,14 +71,14 @@ jobs:
         args: --features "serde"
 
   msrv:
-    name: Current MSRV is 1.41
+    name: Current MSRV is 1.51
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
     - uses: actions-rs/toolchain@v1
       with:
         profile: minimal
-        toolchain: 1.41
+        toolchain: 1.51
         override: true
     - uses: actions-rs/cargo@v1
       with:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ef8f8d3..694364f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,7 +15,7 @@ Entries are listed in reverse chronological order.
 * Pin `zeroize` to version 1.3 to support a wider range of MSRVs.
 * Add CI via Github actions.
 * Fix breakage in the serde unittests.
-* MSRV is now 1.41 for production and 1.48 for development.
+* MSRV is now 1.51 for production and 1.51 for development.
 * Add an optional check to `SharedSecret` for contibutory behaviour.
 * Add implementation of `ReusableSecret` keys which are non-ephemeral, but which
   cannot be serialised to discourage long-term use.
diff --git a/Cargo.toml b/Cargo.toml
index 47c47d6..5668213 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,8 +5,7 @@ edition = "2018"
 # - update version in README.md
 # - update html_root_url
 # - update CHANGELOG
-# - if any changes were made to README.md, mirror them in src/lib.rs docs
-version = "1.2.0"
+version = "2.0.0-pre.2"
 authors = [
     "Isis Lovecruft <isis@patternsinthevoid.net>",
     "DebugSteven <debugsteven@gmail.com>",
@@ -34,12 +33,12 @@ travis-ci = { repository = "dalek-cryptography/x25519-dalek", branch = "master"}
 features = ["nightly", "reusable_secrets", "serde"]
 
 [dependencies]
-curve25519-dalek = { version = "3", default-features = false }
-rand_core = { version = "0.5", default-features = false }
+curve25519-dalek = { version = "4.0.0-pre.2", default-features = false }
+rand_core = { version = "0.6", default-features = false }
 # `serde` is renamed to `our_serde` in order to avoid a name collision between
 # importing the serde dependency and enabling the curve25519-dalek/serde feature
 our_serde = { package = "serde", version = "1", default-features = false, optional = true, features = ["derive"] }
-zeroize = { version = "=1.3", default-features = false, features = ["zeroize_derive"] }
+zeroize = { version = "1", default-features = false, features = ["zeroize_derive"] }
 
 [dev-dependencies]
 bincode = "1"
@@ -59,3 +58,6 @@ u64_backend = ["curve25519-dalek/u64_backend"]
 u32_backend = ["curve25519-dalek/u32_backend"]
 fiat_u64_backend = ["curve25519-dalek/fiat_u64_backend"]
 fiat_u32_backend = ["curve25519-dalek/fiat_u32_backend"]
+
+[patch.crates-io]
+curve25519-dalek = { git = "https://github.com/mobilecoinfoundation/curve25519-dalek.git", rev = "8791722e0273762552c9a056eaccb7df6baf44d7" }
diff --git a/README.md b/README.md
index c7bb1be..c451141 100644
--- a/README.md
+++ b/README.md
@@ -102,12 +102,12 @@ To install, add the following to your project's `Cargo.toml`:
 
 ```toml
 [dependencies]
-x25519-dalek = "1"
+x25519-dalek = "2.0.0-pre.2"
 ```
 
 # MSRV
 
-Current MSRV is 1.41 for production builds, and 1.48 for running tests.
+Current MSRV is 1.51 for production builds, and 1.51 for running tests.
 
 # Documentation
 
diff --git a/src/lib.rs b/src/lib.rs
index ef35c62..c63d287 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -18,7 +18,7 @@
 #![cfg_attr(feature = "bench", feature(test))]
 #![cfg_attr(feature = "nightly", deny(missing_docs))]
 #![doc(html_logo_url = "https://doc.dalek.rs/assets/dalek-logo-clear.png")]
-#![doc(html_root_url = "https://docs.rs/x25519-dalek/1.2.0")]
+#![doc(html_root_url = "https://docs.rs/x25519-dalek/2.0.0-pre.2")]
 
 //! # x25519-dalek  [![](https://img.shields.io/crates/v/x25519-dalek.svg)](https://crates.io/crates/x25519-dalek) [![](https://docs.rs/x25519-dalek/badge.svg)](https://docs.rs/x25519-dalek) [![](https://travis-ci.org/dalek-cryptography/x25519-dalek.svg?branch=master)](https://travis-ci.org/dalek-cryptography/x25519-dalek)
 //!
@@ -124,12 +124,12 @@
 //!
 //! ```toml
 //! [dependencies]
-//! x25519-dalek = "1"
+//! x25519-dalek = "2.0.0-pre.2"
 //! ```
 //!
 //! # MSRV
 //!
-//! Current MSRV is 1.41 for production builds, and 1.48 for running tests.
+//! Current MSRV is 1.51 for production builds, and 1.51 for running tests.
 //!
 //! # Documentation
 //!