diff --git a/manifest.toml b/manifest.toml
index c091389..f0737fc 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -59,7 +59,7 @@ ram.runtime = "1500M"
     api.protected = true
 
     [resources.apt]
-    packages = "apt-transport-https memcached postgresql postgresql-common"
+    packages = "apt-transport-https, memcached, postgresql, postgresql-common"
 
     extras.openproject.repo = "deb https://dl.packager.io/srv/deb/opf/openproject/stable/13/debian 11 main"
     extras.openproject.key = "https://dl.packager.io/srv/opf/openproject/key"