diff --git a/pyproject.toml b/pyproject.toml
index 9da0b12..a880812 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ dependencies = [
     "yapf",
     "rich-argparse",
     "Cython",
-    "setuptools",
+    "setuptools==70.0.0",
 ]
 
 [project.optional-dependencies]