diff --git a/.gitignore b/.gitignore
index 47a1f50..94aa31e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -116,3 +116,4 @@
 /evolution-ews-3.28.1.tar.xz
 /evolution-ews-3.28.2.tar.xz
 /evolution-ews-3.28.3.tar.xz
+/evolution-ews-3.28.4.tar.xz
diff --git a/evolution-ews-3.28.3-gn796297-rsvp.patch b/evolution-ews-3.28.3-gn796297-rsvp.patch
deleted file mode 100644
index 47e9c4f..0000000
--- a/evolution-ews-3.28.3-gn796297-rsvp.patch
+++ /dev/null
@@ -1,104 +0,0 @@
-diff --git a/src/calendar/e-cal-backend-ews-utils.c b/src/calendar/e-cal-backend-ews-utils.c
-index fc733edf..1bfe71f3 100644
---- a/src/calendar/e-cal-backend-ews-utils.c
-+++ b/src/calendar/e-cal-backend-ews-utils.c
-@@ -1644,7 +1644,7 @@ convert_vevent_component_to_updatexml (ESoapMessage *msg,
- 
- 	e_ews_collect_attendees (icalcomp, &required, &optional, &resource, &rsvp_requested);
- 
--	e_ews_message_write_string_parameter (msg, "IsResponseRequested", NULL, rsvp_requested ? "true" : "false");
-+	convert_vevent_property_to_updatexml (msg, "IsResponseRequested", rsvp_requested ? "true" : "false", "calendar", NULL, NULL);
- 
- 	if (required != NULL) {
- 		e_ews_message_start_set_item_field (msg, "RequiredAttendees", "calendar", "CalendarItem");
-diff --git a/src/calendar/e-cal-backend-ews.c b/src/calendar/e-cal-backend-ews.c
-index c7d0b61c..02f88e71 100644
---- a/src/calendar/e-cal-backend-ews.c
-+++ b/src/calendar/e-cal-backend-ews.c
-@@ -87,6 +87,7 @@ struct _ECalBackendEwsPrivate {
- 	" calendar:Resources" \
- 	" calendar:ModifiedOccurrences" \
- 	" calendar:IsMeeting" \
-+	" calendar:IsResponseRequested" \
- 	" calendar:MyResponseType" \
- 	" calendar:RequiredAttendees" \
- 	" calendar:OptionalAttendees"
-@@ -738,6 +739,7 @@ ecb_ews_item_to_component_sync (ECalBackendEws *cbews,
- 		item_id = e_ews_item_get_id (item);
- 
- 		if (e_ews_item_get_is_meeting (item)) {
-+			gboolean is_response_requested = e_ews_item_get_is_response_requested (item);
- 			gchar *user_email;
- 
- 			user_email = camel_ews_settings_dup_email (ews_settings);
-@@ -777,6 +779,11 @@ ecb_ews_item_to_component_sync (ECalBackendEws *cbews,
- 				icalproperty_add_parameter (icalprop, cu_type);
- 				icalproperty_add_parameter (icalprop, param);
- 
-+				if (is_response_requested) {
-+					param = icalparameter_new_rsvp (ICAL_RSVP_TRUE);
-+					icalproperty_add_parameter (icalprop, param);
-+				}
-+
- 				if (user_email && (email || attendee->mailbox->email) && e_ews_item_get_my_response_type (item) &&
- 				    g_ascii_strcasecmp (email ? email : attendee->mailbox->email, user_email) == 0) {
- 					param = ecb_ews_responsetype_to_partstat (e_ews_item_get_my_response_type (item));
-diff --git a/src/server/e-ews-item.c b/src/server/e-ews-item.c
-index 5b322780..b0ac50b7 100644
---- a/src/server/e-ews-item.c
-+++ b/src/server/e-ews-item.c
-@@ -140,6 +140,7 @@ struct _EEwsItemPrivate {
- 	EwsMailbox *sender;
- 
- 	gboolean is_meeting;
-+	gboolean is_response_requested;
- 	GSList *modified_occurrences;
- 	GSList *attachments_ids;
- 	gchar *my_response_type;
-@@ -288,6 +289,7 @@ e_ews_item_init (EEwsItem *item)
- 
- 	item->priv->item_type = E_EWS_ITEM_TYPE_UNKNOWN;
- 	item->priv->is_meeting = FALSE;
-+	item->priv->is_response_requested = FALSE;
- 
- 	item->priv->mapi_extended_tags = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, g_free);
- 	item->priv->mapi_extended_sets = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, (GDestroyNotify) g_hash_table_destroy);
-@@ -1629,6 +1631,10 @@ e_ews_item_set_from_soap_parameter (EEwsItem *item,
- 			value = e_soap_parameter_get_string_value (subparam);
- 			priv->is_meeting = (!g_ascii_strcasecmp (value, "true"));
- 			g_free (value);
-+		} else if (!g_ascii_strcasecmp (name, "IsResponseRequested")) {
-+			value = e_soap_parameter_get_string_value (subparam);
-+			priv->is_response_requested = (!g_ascii_strcasecmp (value, "true"));
-+			g_free (value);
- 		} else if (!g_ascii_strcasecmp (name, "MyResponseType")) {
- 			g_free (priv->my_response_type);
- 			priv->my_response_type = e_soap_parameter_get_string_value (subparam);
-@@ -1894,6 +1900,14 @@ e_ews_item_get_is_meeting (EEwsItem *item)
- 	return item->priv->is_meeting;
- }
- 
-+gboolean
-+e_ews_item_get_is_response_requested (EEwsItem *item)
-+{
-+	g_return_val_if_fail (E_IS_EWS_ITEM (item), FALSE);
-+
-+	return item->priv->is_response_requested;
-+}
-+
- gboolean
- e_ews_item_is_forwarded (EEwsItem *item,
-                          gboolean *forwarded)
-diff --git a/src/server/e-ews-item.h b/src/server/e-ews-item.h
-index 8c4b126a..d5487918 100644
---- a/src/server/e-ews-item.h
-+++ b/src/server/e-ews-item.h
-@@ -311,6 +311,8 @@ EwsMailbox *
- void		e_ews_mailbox_free		(EwsMailbox *mailbox);
- 
- gboolean	e_ews_item_get_is_meeting	(EEwsItem *item);
-+gboolean	e_ews_item_get_is_response_requested
-+						(EEwsItem *item);
- const GSList *	e_ews_item_get_modified_occurrences
- 						(EEwsItem *item);
- gchar *		e_ews_embed_attachment_id_in_uri (const gchar *olduri, const gchar *attach_id);
diff --git a/evolution-ews.spec b/evolution-ews.spec
index ed5616c..e5fe0ac 100644
--- a/evolution-ews.spec
+++ b/evolution-ews.spec
@@ -1,8 +1,8 @@
 %global libmspack_version 0.4
 
 Name: evolution-ews
-Version: 3.28.3
-Release: 2%{?dist}
+Version: 3.28.4
+Release: 1%{?dist}
 Group: Applications/Productivity
 Summary: Evolution extension for Exchange Web Services
 License: LGPLv2
@@ -11,8 +11,6 @@ Source: http://download.gnome.org/sources/%{name}/3.28/%{name}-%{version}.tar.xz
 
 %global eds_evo_version %{version}
 
-Patch01: evolution-ews-3.28.3-gn796297-rsvp.patch
-
 Requires: evolution >= %{eds_evo_version}
 Requires: evolution-data-server >= %{eds_evo_version}
 Requires: %{name}-langpacks = %{version}-%{release}
@@ -51,7 +49,6 @@ This package contains translations for %{name}.
 
 %prep
 %setup -q
-%patch01 -p1 -b .gn796297-rsvp
 
 %build
 
@@ -92,6 +89,10 @@ make install DESTDIR=$RPM_BUILD_ROOT
 %files langpacks -f _build/%{name}.lang
 
 %changelog
+* Mon Jul 16 2018 Milan Crha <mcrha@redhat.com> - 3.28.4-1
+- Update to 3.28.4
+- Remove patch for GNOME bug #796297 (Fixed upstream)
+
 * Mon Jun 25 2018 Milan Crha <mcrha@redhat.com> - 3.28.3-2
 - Add patch for GNOME bug #796297 (Cannot modify existing meeting after fix for this bug)
 
diff --git a/sources b/sources
index 8d5a377..b109847 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (evolution-ews-3.28.3.tar.xz) = 651058a81c41d6c170df22a994ab0b8d5e7cee08fff58b93a485c3e095c336c5b44fecd42c9fbfab9d73303836eb30e9e5d575a00e482def0e55628c6138dd97
+SHA512 (evolution-ews-3.28.4.tar.xz) = b43df4998ae1394fcc314e08c717d37cdfa337a33ea223e5e9cd44a54d2fc68b0150ab8c33cca73e6ef529e49117b18f99ac160d257c26710c9542a546620ca0