diff --git a/Cargo.lock b/Cargo.lock
index ade181c..de357d9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -16,7 +16,7 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "fastnanoid"
-version = "0.3.1"
+version = "0.4.0"
 dependencies = [
  "pyo3",
  "rand",
diff --git a/Cargo.toml b/Cargo.toml
index 190fd43..920773e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "fastnanoid"
-version = "0.3.1"
+version = "0.4.0"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html