diff --git a/python-itsdangerous.spec b/python-itsdangerous.spec
index 25d45ba..9ab525c 100644
--- a/python-itsdangerous.spec
+++ b/python-itsdangerous.spec
@@ -25,6 +25,8 @@ License:        BSD-3-Clause
 Group:          Development/Languages/Python
 URL:            http://github.com/mitsuhiko/itsdangerous
 Source:         https://files.pythonhosted.org/packages/source/i/itsdangerous/itsdangerous-%{version}.tar.gz
+BuildRequires:  %{python_module setuptools}
+BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
 BuildArch:      noarch
 %python_subpackages
@@ -50,6 +52,7 @@ Also I plan to add some extra things.  Work in progress.
 
 %install
 %python_install
+%python_expand %fdupes %{buildroot}%{$python_sitelib}
 
 %files %{python_files}
 %license LICENSE