diff --git a/conf/app.src b/conf/app.src
index beb3fb1..f616854 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/the-djmaze/snappymail/releases/download/v2.21.3/snappymail-2.21.3.tar.gz
-SOURCE_SUM=943b5b6e8be03ee5ce80d2a41cdd8488396d83349009536f37f430e05394570a
+SOURCE_URL=https://github.com/the-djmaze/snappymail/releases/download/v2.21.4/snappymail-2.21.4.tar.gz
+SOURCE_SUM=371137c1e651234eac70364748be508cbf9ba1cd0655f7c7093cc1c6770122e5
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=false
diff --git a/manifest.json b/manifest.json
index 1d6a8fa..d5cea64 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": "2.21.3~ynh1",
+    "version": "2.21.4~ynh1",
     "url": "https://snappymail.eu/",
     "upstream": {
         "license": "AGPL-3.0-only",