diff --git a/Cargo.lock b/Cargo.lock
index 7b3a30f..6df07f4 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,4 +4,4 @@ version = 4
 
 [[package]]
 name = "rune"
-version = "0.3.0"
+version = "0.4.0"
diff --git a/Cargo.toml b/Cargo.toml
index 793fb83..65e3b05 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rune"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 description = "A lexical analysis library."
 repository = "/myrddin/rune"