diff --git a/python-MiniMock.changes b/python-MiniMock.changes
index 37baae0..6367114 100644
--- a/python-MiniMock.changes
+++ b/python-MiniMock.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Feb 11 13:11:28 UTC 2022 - Matej Cepl <mcepl@suse.com>
+
+- Deduplicate files in python_sitelib.
+
 -------------------------------------------------------------------
 Fri Feb 11 10:30:15 UTC 2022 - pgajdos@suse.com
 
diff --git a/python-MiniMock.spec b/python-MiniMock.spec
index 66c38ac..cac6b38 100644
--- a/python-MiniMock.spec
+++ b/python-MiniMock.spec
@@ -26,6 +26,7 @@ License:        MIT
 URL:            https://pypi.python.org/pypi/MiniMock
 Source:         https://files.pythonhosted.org/packages/source/M/MiniMock/MiniMock-%{version}.tar.gz
 BuildRequires:  %{python_module setuptools}
+BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
 BuildRequires:  python3-tools
 BuildArch:      noarch
@@ -52,6 +53,7 @@ When using doctest, mock objects can be very simple.
 python3 -m compileall -d %{python3_sitelib} %{buildroot}%{python3_sitelib}/
 python3 -O -m compileall -d %{python3_sitelib} %{buildroot}%{python3_sitelib}/
 %endif
+%python_expand %fdupes %{buildroot}%{$python_sitelib}
 
 %check
 %python_expand $python -B %{buildroot}%{$python_sitelib}/minimock.py