diff --git a/graphstorm-processing/pyproject.toml b/graphstorm-processing/pyproject.toml
index ef19663f25..0b6b687c59 100644
--- a/graphstorm-processing/pyproject.toml
+++ b/graphstorm-processing/pyproject.toml
@@ -53,7 +53,7 @@ classifiers = [
 
 
 [build-system]
-requires = ["poetry-core>=1.0.8"]
+requires = ["poetry-core<2.0.0"]
 build-backend = "poetry.core.masonry.api"
 
 [tool.black]