diff --git a/pyproject.toml b/pyproject.toml
index 1ff12cc83..6299ebc17 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ dependencies = [
     "pandas>=2.0",
     "numba>=0.57",
     "PyVMCON>=2.4.0,<2.5.0",
-    "CoolProp>=6.4",
+    "CoolProp>=8.0.0",
     "matplotlib>=2.1.1",
     "seaborn>=0.12.2",
     "tabulate",