diff --git a/pyproject.toml b/pyproject.toml
index 9787c3b..f5bf232 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,3 @@
 [build-system]
-requires = ["setuptools", "wheel"]
+requires = ["setuptools", "wheel", "trubar>=0.3.3"]
 build-backend = "setuptools.build_meta"
diff --git a/setup.py b/setup.py
index 80fa48b..d2d15fc 100755
--- a/setup.py
+++ b/setup.py
@@ -111,7 +111,6 @@ def compile_to_multilingual(self):
         package_data=PACKAGE_DATA,
         keywords=KEYWORDS,
         classifiers=CLASSIFIERS,
-        setup_requires=["trubar>=0.3.3"],
         install_requires=[
             "AnyQt",
             "ndf >=0.1.4",