diff --git a/conf/app.src b/conf/app.src
index a98717f..73528b3 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/redmine/redmine/archive/refs/tags/5.0.0.tar.gz
-SOURCE_SUM=57b2482e04d9b4b0866372a3b2a897e55e85f2cc958c116ded67e3ca48ac91e1
+SOURCE_URL=https://github.com/redmine/redmine/archive/refs/tags/4.2.4.tar.gz
+SOURCE_SUM=c6214ef1279eecfdead9104fe032ccc07fc66dda4106c3dceb475d29795fa6ac
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=true
diff --git a/manifest.json b/manifest.json
index dc077a8..713381e 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Flexible project management web application",
         "fr": "Gestionnaire de projet flexible sous forme d'application web"
     },
-    "version": "5.0.0~ynh1",
+    "version": "4.2.4~ynh2",
     "url": "https://www.redmine.org/",
     "upstream": {
         "license": "GPL-2.0",