diff --git a/python-pygit2.spec b/python-pygit2.spec
index 08671f6..3454960 100644
--- a/python-pygit2.spec
+++ b/python-pygit2.spec
@@ -25,6 +25,7 @@ BuildRequires:  python3-devel
 BuildRequires:  python3-pytest
 BuildRequires:  python3-setuptools
 BuildRequires:  python3-six
+BuildRequires:  python3-cached_property
 
 %description -n python3-%{pkgname}
 pygit2 is a set of Python bindings to the libgit2 library, which implements