diff --git a/Cargo.toml b/Cargo.toml
index 866b8f2..d148867 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,7 +4,7 @@ name = "curve25519-dalek"
 # - update CHANGELOG
 # - update html_root_url
 # - update README if required by semver
-version = "3.0.2"
+version = "4.0.0-pre.0"
 authors = ["Isis Lovecruft <isis@patternsinthevoid.net>",
            "Henry de Valence <hdevalence@hdevalence.ca>"]
 readme = "README.md"