diff --git a/pyproject.toml b/pyproject.toml
index 0737c79..7263aee 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,6 +41,7 @@ dependencies = [
     "seaborn",
     "jenkspy",
     "datamol",
+    "rdkit",
 ]
 
 [project.urls]