diff --git a/pyproject.toml b/pyproject.toml
index 9e6e447..ee269e6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "nexa-bidkit"
-version = "0.1.0"
+version = "1.0.0b1"
 description = "Day-ahead and intraday auction bid generation for European power markets"
 authors = []
 readme = "README.md"