diff --git a/Cargo.toml b/Cargo.toml
index 06566bd..da88a83 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,3 +3,4 @@ members = [
     "light-poseidon",
     "xtask",
 ]
+resolver = "2"
diff --git a/light-poseidon/Cargo.toml b/light-poseidon/Cargo.toml
index 2013c96..6b86875 100644
--- a/light-poseidon/Cargo.toml
+++ b/light-poseidon/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "light-poseidon"
-version = "0.3.0"
+version = "0.4.0"
 authors = ["Mike Rostecki <vadorovsky@protonmail.com>"]
 description = "Poseidon hash implementation in Rust"
 repository = "https://github.com/Lightprotocol/light-poseidon"