diff --git a/pyproject.toml b/pyproject.toml
index 4a3777b..b5bff8e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,7 +47,7 @@ dependencies = [
     "art>=6.5,<7.0",
     "networkx>=3.6,<3.7",
     "matplotlib>=3.10,<3.11",
-    "waterEntropy>=2,<2.1",
+    "waterEntropy>=2,<2.2",
     "requests>=2.32,<3.0",
     "rdkit>=2025.9.5",
 ]