diff --git a/evolution-data-server-3.40.4-icalcompiter.patch b/evolution-data-server-3.40.4-icalcompiter.patch
new file mode 100644
index 0000000..e3707b9
--- /dev/null
+++ b/evolution-data-server-3.40.4-icalcompiter.patch
@@ -0,0 +1,49 @@
+diff --git a/src/calendar/backends/file/e-cal-backend-file.c b/src/calendar/backends/file/e-cal-backend-file.c
+index f40bf807c..79ae53632 100644
+--- a/src/calendar/backends/file/e-cal-backend-file.c
++++ b/src/calendar/backends/file/e-cal-backend-file.c
+@@ -904,6 +904,7 @@ scan_vcalendar (ECalBackendFile *cbfile)
+ 			if (e_cal_component_set_icalcomponent (comp, icomp)) {
+ 				/* Thus it's not freed while being used in the 'comp' */
+ 				g_object_ref (icomp);
++				i_cal_object_set_owner (I_CAL_OBJECT (icomp), G_OBJECT (priv->vcalendar));
+ 
+ 				check_dup_uid (cbfile, comp);
+ 
+diff --git a/src/calendar/backends/http/e-cal-backend-http.c b/src/calendar/backends/http/e-cal-backend-http.c
+index a7e930ca0..bfe9b4554 100644
+--- a/src/calendar/backends/http/e-cal-backend-http.c
++++ b/src/calendar/backends/http/e-cal-backend-http.c
+@@ -477,13 +477,18 @@ ecb_http_get_changes_sync (ECalMetaBackend *meta_backend,
+ 	} else {
+ 		iter = i_cal_component_begin_component (maincomp, I_CAL_VCALENDAR_COMPONENT);
+ 		subcomp = i_cal_comp_iter_deref (iter);
++		if (subcomp)
++			i_cal_object_set_owner (I_CAL_OBJECT (subcomp), G_OBJECT (maincomp));
+ 	}
+ 
+ 	while (subcomp && success) {
+ 		ICalComponent *next_subcomp = NULL;
+ 
+-		if (iter)
++		if (iter) {
+ 			next_subcomp = i_cal_comp_iter_next (iter);
++			if (next_subcomp)
++				i_cal_object_set_owner (I_CAL_OBJECT (next_subcomp), G_OBJECT (maincomp));
++		}
+ 
+ 		if (i_cal_component_isa (subcomp) == I_CAL_VCALENDAR_COMPONENT) {
+ 			success = e_cal_meta_backend_gather_timezones_sync (meta_backend, subcomp, TRUE, cancellable, error);
+diff --git a/src/calendar/libecal/e-cal-component.c b/src/calendar/libecal/e-cal-component.c
+index a3dddcc8f..c7629813a 100644
+--- a/src/calendar/libecal/e-cal-component.c
++++ b/src/calendar/libecal/e-cal-component.c
+@@ -95,6 +95,8 @@ foreach_subcomponent (ICalComponent *icalcomp,
+ 	while (subcomp) {
+ 		ICalComponent *next_subcomp;
+ 
++		i_cal_object_set_owner (I_CAL_OBJECT (subcomp), G_OBJECT (icalcomp));
++
+ 		next_subcomp = i_cal_comp_iter_next (iter);
+ 
+ 		if (!func (icalcomp, subcomp, user_data)) {
diff --git a/evolution-data-server.spec b/evolution-data-server.spec
index 361e396..75e44d5 100644
--- a/evolution-data-server.spec
+++ b/evolution-data-server.spec
@@ -54,12 +54,14 @@
 
 Name: evolution-data-server
 Version: 3.40.4
-Release: 1%{?dist}
+Release: 2%{?dist}
 Summary: Backend data server for Evolution
 License: LGPLv2+
 URL: https://wiki.gnome.org/Apps/Evolution
 Source: http://download.gnome.org/sources/%{name}/3.40/%{name}-%{version}.tar.xz
 
+Patch01: evolution-data-server-3.40.4-icalcompiter.patch
+
 Provides: evolution-webcal = %{version}
 Obsoletes: evolution-webcal < 2.24.0
 
@@ -475,6 +477,9 @@ find $RPM_BUILD_ROOT -name '*.so.*' -exec chmod +x {} \;
 %{_datadir}/installed-tests
 
 %changelog
+* Mon Nov 08 2021 Milan Crha <mcrha@redhat.com> - 3.40.4-2
+- Resolves: #2021055 (Add patch to correct ICalCompIter component's usage)
+
 * Fri Aug 13 2021 Milan Crha <mcrha@redhat.com> - 3.40.4-1
 - Related: #1992450 (Update to 3.40.4)