diff --git a/Cargo.toml b/Cargo.toml
index 3b0064c..32f3012 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "instant-acme"
-version = "0.3.4"
+version = "0.4.0"
 edition = "2021"
 license = "Apache-2.0"
 description = "Async pure-Rust ACME client"