diff --git a/pyproject.toml b/pyproject.toml
index 89acad6..1b7881f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -51,6 +51,7 @@ dev = [
     'deepecho[test]',
 
     # general
+    'build>=1.0.0,<2',
     'setuptools<49.2',
     'bump-my-version>=0.18.3,<1',
     'pip>=9.0.1',