diff --git a/Cargo.toml b/Cargo.toml
index 2983633..21c38fd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ambition"
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 
 # Squeeze out more performance for `release` builds - very slow compile times
diff --git a/flake.nix b/flake.nix
index a583a17..986df3f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -37,7 +37,7 @@
           })
           .buildRustPackage {
             pname = "ambition";
-            version = "0.3.0";
+            version = "0.4.0";
             src = ./.;
             cargoLock.lockFile = ./Cargo.lock;