diff --git a/evolution-data-server.spec b/evolution-data-server.spec
index 292b288..8915455 100644
--- a/evolution-data-server.spec
+++ b/evolution-data-server.spec
@@ -331,6 +331,7 @@ glib-compile-schemas %{_datadir}/glib-2.0/schemas &>/dev/null || :
 %{ecal_backends_dir}/libecalbackendcaldav.so
 %{ecal_backends_dir}/libecalbackendcontacts.so
 %{ecal_backends_dir}/libecalbackendfile.so
+%{ecal_backends_dir}/libecalbackendgtasks.so
 %{ecal_backends_dir}/libecalbackendhttp.so
 %{ecal_backends_dir}/libecalbackendweather.so
 %{modules_dir}/module-cache-reaper.so