diff --git a/README.md b/README.md
index ee64571..933eeb7 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ In addition to Nextcloud core features, the following are made available with th
  * Serve `/.well-known` paths for CalDAV and CardDAV on the domain only if it's not already served - i.e. by Baïkal
 
 
-**Shipped version:** 28.0.3~ynh2
+**Shipped version:** 28.0.4~ynh1
 
 **Demo:** <https://demo.nextcloud.com/>
 
diff --git a/README_fr.md b/README_fr.md
index 05efaec..a89996e 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -29,7 +29,7 @@ En plus des fonctionnalités principales de Nextcloud, les fonctionnalités suiv
  * Utilise l'adresse `/.well-known` pour la synchronisation CalDAV et CardDAV du domaine si aucun autre service ne l'utilise déjà - par exemple, Baïkal
 
 
-**Version incluse :** 28.0.3~ynh2
+**Version incluse :** 28.0.4~ynh1
 
 **Démo :** <https://demo.nextcloud.com/>
 
diff --git a/README_gl.md b/README_gl.md
index 3e319ff..aad0610 100644
--- a/README_gl.md
+++ b/README_gl.md
@@ -29,7 +29,7 @@ In addition to Nextcloud core features, the following are made available with th
  * Serve `/.well-known` paths for CalDAV and CardDAV on the domain only if it's not already served - i.e. by Baïkal
 
 
-**Versión proporcionada:** 28.0.3~ynh2
+**Versión proporcionada:** 28.0.4~ynh1
 
 **Demo:** <https://demo.nextcloud.com/>
 
diff --git a/README_it.md b/README_it.md
index 9e10875..d3fa654 100644
--- a/README_it.md
+++ b/README_it.md
@@ -29,7 +29,7 @@ In addition to Nextcloud core features, the following are made available with th
  * Serve `/.well-known` paths for CalDAV and CardDAV on the domain only if it's not already served - i.e. by Baïkal
 
 
-**Versione pubblicata:** 28.0.3~ynh2
+**Versione pubblicata:** 28.0.4~ynh1
 
 **Prova:** <https://demo.nextcloud.com/>
 
diff --git a/doc/PRE_UPGRADE.md b/doc/PRE_UPGRADE.d/28.0.3~ynh1.md
similarity index 100%
rename from doc/PRE_UPGRADE.md
rename to doc/PRE_UPGRADE.d/28.0.3~ynh1.md
diff --git a/manifest.toml b/manifest.toml
index c3ff03a..5a47012 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -5,7 +5,7 @@ name = "Nextcloud"
 description.en = "Online storage, file sharing platform and various other applications"
 description.fr = "Stockage en ligne, plateforme de partage de fichiers et diverses autres applications"
 
-version = "28.0.3~ynh2"
+version = "28.0.4~ynh1"
 
 maintainers = ["kay0u"]
 
@@ -59,8 +59,8 @@ ram.runtime = "512M"
     [resources.sources]
 
         [resources.sources.main]
-        url = 'https://download.nextcloud.com/server/releases/nextcloud-28.0.3.tar.bz2'
-        sha256 = '9ed413c0de16f5b033ceeffcca99c0d61fc698dbeb8db851ac9adf9eef951906'
+        url = 'https://download.nextcloud.com/server/releases/nextcloud-28.0.4.tar.bz2'
+        sha256 = '9bfecee1e12fba48c49e9a71caa81c4ba10b2884787fab75d64ccfd122a13019'
 
         [resources.sources.27]
         url = 'https://download.nextcloud.com/server/releases/nextcloud-27.0.0.tar.bz2'
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 19e6a36..65cce78 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -40,45 +40,6 @@ is_url_handled() {
     fi
 }
 
-#=================================================
-
-# Check available space before creating a temp directory.
-#
-# usage: ynh_smart_mktemp --min_size="Min size"
-#
-# | arg: -s, --min_size= - Minimal size needed for the temporary directory, in Mb
-ynh_smart_mktemp () {
-        # Declare an array to define the options of this helper.
-        declare -Ar args_array=( [s]=min_size= )
-        local min_size
-        # Manage arguments with getopts
-        ynh_handle_getopts_args "$@"
-
-        min_size="${min_size:-300}"
-        # Transform the minimum size from megabytes to kilobytes
-        min_size=$(( $min_size * 1024 ))
-
-        # Check if there's enough free space in a directory
-        is_there_enough_space () {
-                local free_space=$(df --output=avail "$1" | sed 1d)
-                test $free_space -ge $min_size
-        }
-
-        if is_there_enough_space /tmp; then
-                local tmpdir=/tmp
-        elif is_there_enough_space /var; then
-                local tmpdir=/var
-        elif is_there_enough_space /; then
-                local tmpdir=/
-        elif is_there_enough_space /home; then
-                local tmpdir=/home
-        else
-                ynh_die "Insufficient free space to continue..."
-        fi
-
-        echo "$(mktemp --directory --tmpdir="$tmpdir")"
-}
-
 #=================================================
 # FUTURE OFFICIAL HELPERS
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 643add7..a7f4515 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -164,7 +164,7 @@ then
         fi
 
         # Create a temporary directory
-        tmpdir="$(ynh_smart_mktemp min_size=300)"
+        tmpdir="${install_dir}__tmp_upgrade"
 
         ynh_setup_source --dest_dir="$tmpdir" --source_id="$source_id"