diff --git a/pyproject.toml b/pyproject.toml
index 9979696..20c97bb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "miom"
-version = "0.9.0-beta.0"
+version = "0.9.0-beta.1"
 description = "Mixed Integer Optimization for Metabolism"
 authors = ["Pablo R. Mier <pablo.rodriguez.mier@gmail.com>"]
 keywords = ["optimization", "LP", "MIP", "metabolism", "metabolic-networks"]