diff --git a/Cargo.toml b/Cargo.toml
index 4b38d48..95dd4d1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "devela_depend"
 description = "Optional external dependencies for `devela`."
-version = "0.3.0"
+version = "0.4.0"
 edition = "2021"
 # sync with readme & .github/workflows/check.yml
 rust-version = "1.72.1" # required by: hashbrown: ahash