diff --git a/CHANGELOG.md b/CHANGELOG.md
index c80a0c03a..4c412ee44 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 4.0.0-rc.1 (2023-12-04)
+
+* fix: prevent sending group physical address if it's empty and allow empty text for timezone ([32caebb](https://framagit.org/framasoft/mobilizon/commits/32caebb)), closes [#1357](https://framagit.org/framasoft/mobilizon/issues/1357)
+* fix(activitypub): add missing externalParticipationUrl context ([8795576](https://framagit.org/framasoft/mobilizon/commits/8795576)), closes [#1376](https://framagit.org/framasoft/mobilizon/issues/1376)
+* fix(backend): only send suspension notification emails when actor's suspended and not just deleted ([9e41bc1](https://framagit.org/framasoft/mobilizon/commits/9e41bc1))
+* docs(nginx): improve nginx configuration ([6c992ca](https://framagit.org/framasoft/mobilizon/commits/6c992ca))
+
 ## 4.0.0-beta.2 (2023-12-01)
 
 * test: fix tests using verified routes ([5fcf3d5](https://framagit.org/framasoft/mobilizon/commits/5fcf3d5))
diff --git a/lib/federation/activity_pub/utils.ex b/lib/federation/activity_pub/utils.ex
index eeb802a88..51441fc05 100644
--- a/lib/federation/activity_pub/utils.ex
+++ b/lib/federation/activity_pub/utils.ex
@@ -165,6 +165,10 @@ defmodule Mobilizon.Federation.ActivityPub.Utils do
           "todos" => %{
             "@id" => "mz:todos",
             "@type" => "@id"
+          },
+          "status" => %{
+            "@id" => "ical:status",
+            "@type" => "ical:status"
           }
         }
       ]
diff --git a/lib/federation/activity_stream/converter/event.ex b/lib/federation/activity_stream/converter/event.ex
index d08c61db0..2eca4e805 100644
--- a/lib/federation/activity_stream/converter/event.ex
+++ b/lib/federation/activity_stream/converter/event.ex
@@ -81,7 +81,11 @@ defmodule Mobilizon.Federation.ActivityStream.Converter.Event do
           external_participation_url: object["externalParticipationUrl"],
           options: options,
           metadata: metadata,
-          status: object |> Map.get("ical:status", "CONFIRMED") |> String.downcase(),
+          # Remove fallback in MBZ 5.x
+          status:
+            object
+            |> Map.get("status", Map.get(object, "ical:status", "CONFIRMED"))
+            |> String.downcase(),
           online_address: object |> Map.get("attachment", []) |> get_online_address(),
           phone_address: object["phoneAddress"],
           draft: object["draft"] == true,
@@ -142,7 +146,9 @@ defmodule Mobilizon.Federation.ActivityStream.Converter.Event do
       "anonymousParticipationEnabled" => event.options.anonymous_participation,
       "attachment" => Enum.map(event.metadata, &EventMetadataConverter.metadata_to_as/1),
       "draft" => event.draft,
+      # Remove me in MBZ 5.x
       "ical:status" => event.status |> to_string |> String.upcase(),
+      "status" => event.status |> to_string |> String.upcase(),
       "id" => event.url,
       "url" => event.url,
       "inLanguage" => event.language,
diff --git a/lib/service/actor_suspension.ex b/lib/service/actor_suspension.ex
index 00062563e..6c548772a 100644
--- a/lib/service/actor_suspension.ex
+++ b/lib/service/actor_suspension.ex
@@ -35,13 +35,17 @@ defmodule Mobilizon.Service.ActorSuspension do
     delete_actor_options = Keyword.merge(@delete_actor_default_options, options)
     Logger.debug(inspect(delete_actor_options))
 
-    send_suspension_notification(actor)
+    # Only send suspension notifications if we actually are suspending the actor
+    if Keyword.get(delete_actor_options, :suspension, false) do
+      send_suspension_notification(actor)
 
-    Logger.debug(
-      "Sending suspension notifications to participants from events created by this actor"
-    )
+      Logger.debug(
+        "Sending suspension notifications to participants from events created by this actor"
+      )
+
+      notify_event_participants_from_suspension(actor)
+    end
 
-    notify_event_participants_from_suspension(actor)
     delete_participations(actor)
 
     multi =
diff --git a/lib/service/workers/background.ex b/lib/service/workers/background.ex
index 6f5175b9d..d7d62a0bc 100644
--- a/lib/service/workers/background.ex
+++ b/lib/service/workers/background.ex
@@ -20,7 +20,10 @@ defmodule Mobilizon.Service.Workers.Background do
       reserve_username when is_boolean(reserve_username) ->
         case Actors.get_actor(actor_id) do
           %Actor{} = actor ->
-            ActorSuspension.suspend_actor(actor, reserve_username: reserve_username)
+            ActorSuspension.suspend_actor(actor,
+              reserve_username: reserve_username,
+              suspension: Map.get(args, "suspension", false)
+            )
 
           nil ->
             {:error, :actor_not_found}
diff --git a/mix.exs b/mix.exs
index 1ee250566..aebe02bd2 100644
--- a/mix.exs
+++ b/mix.exs
@@ -1,7 +1,7 @@
 defmodule Mobilizon.Mixfile do
   use Mix.Project
 
-  @version "4.0.0-beta.2"
+  @version "4.0.0-rc.1"
 
   def project do
     [
diff --git a/package.json b/package.json
index 248ccc745..8f577cd27 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mobilizon",
-  "version": "4.0.0-beta.2",
+  "version": "4.0.0-rc.1",
   "private": true,
   "scripts": {
     "dev": "vite",
diff --git a/src/components/Account/ActorAutoComplete.vue b/src/components/Account/ActorAutoComplete.vue
index 47da387aa..6e561d5a0 100644
--- a/src/components/Account/ActorAutoComplete.vue
+++ b/src/components/Account/ActorAutoComplete.vue
@@ -7,7 +7,7 @@
     :allow-new="false"
     :open-on-focus="false"
     field="displayName"
-    placeholder="Add a recipient"
+    :placeholder="t('Add a recipient')"
     @typing="getActors"
   >
     <template #default="props">
@@ -23,6 +23,7 @@ import { Paginate } from "@/types/paginate";
 import { useLazyQuery } from "@vue/apollo-composable";
 import { computed, ref } from "vue";
 import ActorInline from "./ActorInline.vue";
+import { useI18n } from "vue-i18n";
 
 const props = defineProps<{
   modelValue: IActor[];
@@ -41,6 +42,8 @@ const modelValueWithDisplayName = computed(() =>
   }))
 );
 
+const { t } = useI18n({ useScope: "global" });
+
 const {
   load: loadSearchPersonsAndGroupsQuery,
   refetch: refetchSearchPersonsAndGroupsQuery,
diff --git a/src/i18n/en_US.json b/src/i18n/en_US.json
index 42da97a2a..1a0818afa 100644
--- a/src/i18n/en_US.json
+++ b/src/i18n/en_US.json
@@ -1636,5 +1636,7 @@
   "Either your participation has already been cancelled, either the validation token is incorrect.": "Either your participation has already been cancelled, either the validation token is incorrect.",
   "Your participation has been cancelled": "Your participation has been cancelled",
   "Return to the event page": "Return to the event page",
-  "Cancel participation": "Cancel participation"
+  "Cancel participation": "Cancel participation",
+  "Add a recipient": "Add a recipient",
+  "Announcements for {eventTitle}": "Announcements for {eventTitle}"
 }
\ No newline at end of file
diff --git a/src/i18n/fr_FR.json b/src/i18n/fr_FR.json
index f5c28b607..2ccc88210 100644
--- a/src/i18n/fr_FR.json
+++ b/src/i18n/fr_FR.json
@@ -1630,5 +1630,7 @@
   "Either your participation has already been cancelled, either the validation token is incorrect.": "Soit votre participation a déjà été annulée, soit le jeton de validation est incorrect.",
   "Your participation has been cancelled": "Votre participation a été annulée",
   "Return to the event page": "Retourner à la page de l'événement",
-  "Cancel participation": "Annuler la participation"
+  "Cancel participation": "Annuler la participation",
+  "Add a recipient": "Ajouter un·e destinataire",
+  "Announcements for {eventTitle}": "Annonces pour {eventTitle}"
 }
diff --git a/support/nginx/mobilizon-release.conf b/support/nginx/mobilizon-release.conf
index f074c3544..11c661b08 100644
--- a/support/nginx/mobilizon-release.conf
+++ b/support/nginx/mobilizon-release.conf
@@ -66,6 +66,8 @@ server {
 
 
     location / {
+        expires off;
+        add_header Cache-Control "public, max-age=0, s-maxage=0, must-revalidate" always;
         proxy_pass http://localhost:4000;
     }
 
@@ -75,24 +77,15 @@ server {
         default_type "text/plain";
     }
 
-    location ~ ^/img {
+    location ~ ^/(assets|img) {
         root /opt/mobilizon/priv/static;
-        etag off;
         access_log off;
-        add_header Cache-Control "public, max-age=31536000, immutable";
-    }
-
-    location ~ ^/(js|css) {
-        root /opt/mobilizon/priv/static;
-        etag off;
-        access_log off;
-        add_header Cache-Control "public, max-age=31536000, immutable";
+        add_header Cache-Control "public, max-age=31536000, s-maxage=31536000, immutable";
     }
 
     location ~ ^/(media|proxy) {
-        etag off;
         access_log off;
-        add_header Cache-Control "public, max-age=31536000, immutable";
+        add_header Cache-Control "public, max-age=31536000, s-maxage=31536000, immutable";
         proxy_pass http://localhost:4000;
     }
 
diff --git a/support/nginx/mobilizon-source.conf b/support/nginx/mobilizon-source.conf
index ff626e197..03ed6979f 100644
--- a/support/nginx/mobilizon-source.conf
+++ b/support/nginx/mobilizon-source.conf
@@ -66,6 +66,8 @@ server {
 
 
     location / {
+        expires off;
+        add_header Cache-Control "public, max-age=0, s-maxage=0, must-revalidate" always;
         proxy_pass http://localhost:4000;
     }
 
@@ -75,24 +77,15 @@ server {
         default_type "text/plain";
     }
 
-    location ~ ^/img {
+    location ~ ^/(assets|img) {
         root /opt/mobilizon/priv/static;
-        etag off;
         access_log off;
-        add_header Cache-Control "public, max-age=31536000, immutable";
-    }
-
-    location ~ ^/(js|css) {
-        root /home/mobilizon/live/priv/static;
-        etag off;
-        access_log off;
-        add_header Cache-Control "public, max-age=31536000, immutable";
+        add_header Cache-Control "public, max-age=31536000, s-maxage=31536000, immutable";
     }
 
     location ~ ^/(media|proxy) {
-        etag off;
         access_log off;
-        add_header Cache-Control "public, max-age=31536000, immutable";
+        add_header Cache-Control "public, max-age=31536000, s-maxage=31536000, immutable";
         proxy_pass http://localhost:4000;
     }
 
diff --git a/test/federation/activity_pub/types/events_test.exs b/test/federation/activity_pub/types/events_test.exs
index 99589f043..3e875e27a 100644
--- a/test/federation/activity_pub/types/events_test.exs
+++ b/test/federation/activity_pub/types/events_test.exs
@@ -49,6 +49,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.EventsTest do
                    "name" => @event_title,
                    "repliesModerationOption" => nil,
                    "startTime" => @event_begins_on,
+                   "status" => "CONFIRMED",
                    "tag" => [],
                    "to" => [@ap_public],
                    "type" => "Event"
@@ -96,6 +97,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.EventsTest do
                    "name" => @event_title,
                    "repliesModerationOption" => nil,
                    "startTime" => @event_begins_on,
+                   "status" => "CONFIRMED",
                    "tag" => [],
                    "to" => [^followers_url],
                    "type" => "Event"
@@ -152,6 +154,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.EventsTest do
                    "name" => @event_title,
                    "repliesModerationOption" => nil,
                    "startTime" => @event_begins_on,
+                   "status" => "CONFIRMED",
                    "tag" => [],
                    "to" => [@ap_public],
                    "type" => "Event"
@@ -200,6 +203,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.EventsTest do
                    "name" => @event_updated_title,
                    "repliesModerationOption" => nil,
                    "startTime" => @event_begins_on,
+                   "status" => "CONFIRMED",
                    "tag" => [],
                    "to" => [@ap_public],
                    "type" => "Event"
@@ -260,6 +264,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.EventsTest do
                    "name" => @event_updated_title,
                    "repliesModerationOption" => nil,
                    "startTime" => @event_begins_on,
+                   "status" => "CONFIRMED",
                    "tag" => [],
                    "to" => [@ap_public],
                    "type" => "Event"
@@ -320,6 +325,7 @@ defmodule Mobilizon.Federation.ActivityPub.Types.EventsTest do
                    "name" => @event_updated_title,
                    "repliesModerationOption" => nil,
                    "startTime" => @event_begins_on,
+                   "status" => "CONFIRMED",
                    "tag" => [],
                    "to" => [@ap_public],
                    "type" => "Event"