diff --git a/libcint.spec b/libcint.spec
index e96f688..559d4d1 100644
--- a/libcint.spec
+++ b/libcint.spec
@@ -1,6 +1,6 @@
 Name:           libcint
 Version:        3.0.20
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        General Gaussian-type orbitals integrals for quantum chemistry
 
 License:        BSD
@@ -32,6 +32,7 @@ integrals for Cartesian / real-spherical / spinor Gaussian type functions.
 %package        devel
 Summary:        Development files for %{name}
 Requires:       %{name}%{?_isa} = %{version}-%{release}
+Conflicts:      qcint-devel
 
 %description    devel
 The %{name}-devel package contains libraries and header files for
@@ -70,6 +71,9 @@ make -C build test ARGS=-V
 %{_libdir}/libcint.so
 
 %changelog
+* Sat May 23 2020 Susi Lehtola <jussilehtola@fedoraproject.org> - 3.0.20-2
+- Add missing conflicts: qcint-devel to libcint-devel.
+
 * Thu May 14 2020 Susi Lehtola <jussilehtola@fedoraproject.org> - 3.0.20-1
 - Update to 3.0.20, fixing a bug in magnetizabilities.