diff --git a/conf/app.src b/conf/app.src
index b36de25..7c7220c 100755
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/omeka/omeka-s/releases/download/v3.2.3/omeka-s-3.2.3.zip
-SOURCE_SUM=65b6992809b943ea806eb40c5a4e65a5561dd689c0970e7a65a262c2198c69ef
+SOURCE_URL=https://github.com/omeka/omeka-s/releases/download/v4.0.0/omeka-s-4.0.0.zip
+SOURCE_SUM=bbc103ce6beefe780811f7499da2fd4ab678db0bbda9f532ab3b64cd741d11f5
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=zip
 SOURCE_IN_SUBDIR=true
diff --git a/manifest.json b/manifest.json
index fce412d..2b385ad 100755
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Web publication system for universities, galleries, libraries, archives, and museums",
         "fr": "Système de publication Web pour les universités, les galeries, les bibliothèques, les archives et les musées"
     },
-    "version": "3.2.3~ynh1",
+    "version": "4.0.0~ynh1",
     "url": "https://omeka.org/",
     "upstream": {
         "license": "AGPL-3.0-only",