diff --git a/README.md b/README.md
index 5d39562..86e1b19 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ If you don't have YunoHost, please see [here](https://yunohost.org/#/install) to
 own data. A personal cloud which run on your own server. With Nextcloud
 you can synchronize your files over your devices.
 
-**Shipped version:** 15.0.10
+**Shipped version:** 15.0.11
 
 ## Screenshots
 
diff --git a/conf/php-fpm.conf b/conf/php-fpm.conf
index f13ed6d..31d62f2 100644
--- a/conf/php-fpm.conf
+++ b/conf/php-fpm.conf
@@ -433,7 +433,10 @@ env[PATH] = $PATH
 php_value[upload_max_filesize] = 10G
 php_value[post_max_size] = 10G
 php_value[default_charset] = UTF-8
-php_value[opcache.enable]=1
+; OPcache is already activated by default
+; php_value[opcache.enable]=1
+; The following parameters are nevertheless recommended for Nextcloud
+; see here: https://docs.nextcloud.com/server/15/admin_manual/installation/server_tuning.html#enable-php-opcache
 php_value[opcache.enable_cli]=1
 php_value[opcache.interned_strings_buffer]=8
 php_value[opcache.max_accelerated_files]=10000
diff --git a/manifest.json b/manifest.json
index 8230b77..a774500 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Access & share your files, calendars, contacts, mail & more from any device, on your terms",
         "fr": "Consultez et partagez vos fichiers, agendas, carnets d'adresses, emails et bien plus depuis les appareils de votre choix, sous vos conditions"
     },
-    "version": "15.0.10~ynh1",
+    "version": "15.0.11~ynh1",
     "url": "https://nextcloud.com",
     "license": "AGPL-3.0",
     "maintainer": {
diff --git a/scripts/upgrade b/scripts/upgrade
index 8e75255..2e3f7ec 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -176,23 +176,34 @@ ynh_install_app_dependencies $pkg_dependencies
 # VERSION TO THE NEXT ONE
 #=================================================
 
+# Define a function to execute commands with `occ`
+exec_occ() {
+(cd "$final_path" && exec_as "$app" \
+    php occ --no-interaction --no-ansi "$@")
+}
+
+# Define a function to add an external storage
+# Create the external storage for the given folders and enable sharing
+create_external_storage() {
+local datadir="$1"
+local mount_name="$2"
+local mount_id=`exec_occ files_external:create --output=json \
+    "$mount_name" 'local' 'null::null' -c "datadir=$datadir" || true`
+! [[ $mount_id =~ ^[0-9]+$ ]] \
+    && ynh_print_warn --message="Unable to create external storage" \
+    || exec_occ files_external:option "$mount_id" enable_sharing true
+}
+# Define app's data directory
+datadir="/home/yunohost.app/$app/data"
+
 if [ "$upgrade_type" == "UPGRADE_APP" ]
 then
     ynh_script_progression --message="Upgrading nextcloud..." --weight=3
 
-    # Define a function to execute commands with `occ`
-    exec_occ() {
-    (cd "$final_path" && exec_as "$app" \
-        php occ --no-interaction --no-ansi "$@")
-    }
-
     # Load the last available version
     source upgrade.d/upgrade.last.sh
     last_version=$next_version
 
-    # Define app's data directory
-    datadir="/home/yunohost.app/$app/data"
-
     # Set write access for the following commands
     chown -R $app: "$final_path" "$datadir"
 
@@ -323,18 +334,6 @@ then
     # MOUNT HOME FOLDERS AS EXTERNAL STORAGE
     #=================================================
 
-    # Define a function to add an external storage
-    # Create the external storage for the given folders and enable sharing
-    create_external_storage() {
-    local datadir="$1"
-    local mount_name="$2"
-    local mount_id=`exec_occ files_external:create --output=json \
-        "$mount_name" 'local' 'null::null' -c "datadir=$datadir" || true`
-    ! [[ $mount_id =~ ^[0-9]+$ ]] \
-        && ynh_print_warn --message="Unable to create external storage" \
-        || exec_occ files_external:option "$mount_id" enable_sharing true
-    }
-
     # Enable External Storage and create local mount to home folder as needed
     if [ $user_home -eq 1 ]; then
         exec_occ app:enable files_external
diff --git a/scripts/upgrade.d/upgrade.last.sh b/scripts/upgrade.d/upgrade.last.sh
index 6df5d10..2c20cb6 100755
--- a/scripts/upgrade.d/upgrade.last.sh
+++ b/scripts/upgrade.d/upgrade.last.sh
@@ -1,10 +1,10 @@
 #!/bin/bash
 
 # Last available nextcloud version
-next_version="15.0.10"
+next_version="15.0.11"
 
 # Nextcloud tarball checksum sha256
-nextcloud_source_sha256="494511fcda6e823e8dfb571fcf3b9ddc433148449acb080104f4165d2f2f4d43"
+nextcloud_source_sha256="59cdde8e7a4a15606efc246e37adf6401b0b4a60f33289be8725d675b9c2ae26"
 
 # This function will only be executed upon applying the last upgrade referenced above
 last_upgrade_operations () {