diff --git a/conf/app.src b/conf/app.src
index 66831c9..0d8b8c0 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/monicahq/monica/archive/v3.7.0.zip
-SOURCE_SUM=1a8f6a8d76c0a504601cf649af219e6b3c4a757f632e71a095c3a2a56232d711
+SOURCE_URL=https://github.com/monicahq/monica/archive/v4.0.0.zip
+SOURCE_SUM=5b108525a2f5fedc0a2bb82a49d3de47d087b33082fb21e64f874d387304ed9f
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=zip
 SOURCE_IN_SUBDIR=true
diff --git a/manifest.json b/manifest.json
index 706d551..4f178a3 100644
--- a/manifest.json
+++ b/manifest.json
@@ -5,7 +5,7 @@
     "description": {
         "en": "Personal Relationship Manager"
     },
-    "version": "3.7.0~ynh2",
+    "version": "4.0.0~ynh1",
     "url": "https://monicahq.com",
     "upstream": {
         "license": "GPL-3.0",