diff --git a/Cargo.toml b/Cargo.toml
index d1d0e88..f94bbfd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "kdl"
-version = "3.0.1-alpha.0"
+version = "4.0.0"
 description = "Document-oriented KDL parser and API. Allows formatting/whitespace/comment-preserving parsing and modification of KDL text."
 authors = ["Kat Marchán <kzm@zkat.tech>", "KDL Community"]
 license = "Apache-2.0"