diff --git a/pyproject.toml b/pyproject.toml
index 2fd6ffe3..5736ec33 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,7 @@ requires = [
     "imbalanced-learn>=0.11.0",
     "imblearn>=0.0",
     "pytest",
-    "morph-kgc=2.3.1",
+    "morph-kgc>=2.3.1",
     "nbformat>=5.9.2",
     "bibtexparser==1.4.1"
 ]