diff --git a/python-python-dateutil.spec b/python-python-dateutil.spec
index 191b5f5..31e57b4 100644
--- a/python-python-dateutil.spec
+++ b/python-python-dateutil.spec
@@ -36,6 +36,7 @@ Source0:        https://files.pythonhosted.org/packages/source/p/python-dateutil
 BuildRequires:  %{python_module setuptools >= 24.3}
 BuildRequires:  %{python_module setuptools_scm}
 BuildRequires:  %{python_module six >= 1.5}
+BuildRequires:  dos2unix
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
 Requires:       python-six >= 1.5
@@ -86,8 +87,7 @@ Orthodox or Julian algorithms.
 %prep
 %setup -q -n python-dateutil-%{version}
 #cleanup and MSdos style end of line separators
-sed -i 's/\r$//' LICENSE NEWS PKG-INFO README.rst
-rm -f setup.cfg
+dos2unix LICENSE NEWS PKG-INFO README.rst
 
 %build
 %python_build
@@ -100,6 +100,7 @@ rm -f setup.cfg
 
 %if %{with test}
 %check
+rm setup.cfg
 export LANG=en_US.UTF-8
 %pytest
 %endif