diff --git a/python-pytest-subtests.spec b/python-pytest-subtests.spec
index 06d4ad3..2881d4a 100644
--- a/python-pytest-subtests.spec
+++ b/python-pytest-subtests.spec
@@ -20,6 +20,7 @@ BuildRequires:  python3-devel
 BuildRequires:  python3-pytest
 BuildRequires:  python3-setuptools
 BuildRequires:  python3-setuptools_scm
+BuildRequires:  python3-attrs
 %{?python_provide:%python_provide python3-%{pypi_name}}
  
 %description -n python3-%{pypi_name}