diff --git a/pyproject.toml b/pyproject.toml
index a2db8d0..588a9a7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ where = ["src"]
 
 [project]
 name = "gradient-free-optimizers"
-version = "1.5.0"
+version = "1.6.0a0"
 description = "Simple and reliable optimization with local, global, population-based and sequential techniques in numerical discrete search spaces."
 dynamic = ["dependencies"]
 readme = "README.md"