diff --git a/Cargo.toml b/Cargo.toml
index d015a82..5972f6a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "implied-vol"
-version = "0.2.1"
+version = "0.2.2"
 authors = ["Hikaru Nakashima <nakashima.alg57@gmail.com>"]
 description = "A pure rust implementation of Peter Jäckel's implied volatility calculation"
 edition = "2021"