diff --git a/conf/app.src b/conf/app.src
index 2323bad..4aadd80 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/the-djmaze/snappymail/releases/download/v2.18.3/snappymail-2.18.3.tar.gz
-SOURCE_SUM=400751edf845d39b5a56da14aaa6f0e8410b9d20f046d5f63b8dd537ca7a2fb4
+SOURCE_URL=https://github.com/the-djmaze/snappymail/releases/download/v2.18.4/snappymail-2.18.4.tar.gz
+SOURCE_SUM=0d1398217e849e0563712e5659ffecbc513d010da43abbb01a9334a85f3041ff
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=false
diff --git a/manifest.json b/manifest.json
index 8e3ab76..1b803dc 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Simple, modern, lightweight & fast web-based e-mail client",
         "fr": "Client de messagerie Web simple, moderne, léger et rapide"
     },
-    "version": "2.18.3~ynh1",
+    "version": "2.18.4~ynh1",
     "url": "https://snappymail.eu/",
     "upstream": {
         "license": "AGPL-3.0-only",