diff --git a/pyproject.toml b/pyproject.toml
index 35470bc..b01a1a1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "pdberellig"
-version = "0.1.1"
+version = "1.0.0"
 description = "A toolkit for functional annotation of ligands in the PDB"
 authors = ["Ibrahim Roshan Kunnakkattu <roshan@ebi.ac.uk>"]
 readme = "README.md"