diff --git a/26.patch b/26.patch
new file mode 100644
index 0000000..d45c010
Binary files /dev/null and b/26.patch differ
diff --git a/libecpint.spec b/libecpint.spec
index c2ad718..e597412 100644
--- a/libecpint.spec
+++ b/libecpint.spec
@@ -1,10 +1,11 @@
 Name:           libecpint
 Version:        1.0.4
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Efficient evaluation of integrals over ab initio effective core potentials
 License:        MIT
 Url:            https://github.com/robashaw/libecpint
 Source0:        https://github.com/robashaw/libecpint/archive/v%{version}.tar.gz#/%{name}-%{version}.tar.gz
+Patch0:         https://github.com/robashaw/libecpint/pull/26.patch
 
 BuildRequires:  gcc-c++
 BuildRequires:  cmake >= 3.12
@@ -37,6 +38,7 @@ This package contains development headers and libraries for libecpint.
 
 %prep
 %setup -q
+%patch0 -p1
 
 %build
 %cmake
@@ -63,6 +65,9 @@ This package contains development headers and libraries for libecpint.
 %{_libdir}/lib*.so
 
 %changelog
+* Wed Jan 27 2021 Christoph Junghans <junghans@votca.org> - 1.0.4-3
+- Add patch to fix memory leak
+
 * Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 1.0.4-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild