diff --git a/actions.toml b/actions.toml
index 38c52a8..fc6cb0f 100644
--- a/actions.toml
+++ b/actions.toml
@@ -6,3 +6,12 @@ command = "/bin/bash scripts/actions/disable_maintenance"
 # accepted_return_codes = [0, 1, 2, 3]  # optional
 accepted_return_codes = [0]
 description = "Disable the maintenance mode of Nextcloud if you're stuck after an upgrade"
+
+[add_multimedia_directories]
+name = "Add multimedia directories"
+command = "/bin/bash scripts/actions/add_multimedia_directories"
+# user = "root"  # optional
+# cwd = "/" # optional
+# accepted_return_codes = [0, 1, 2, 3]  # optional
+accepted_return_codes = [0]
+description = "Add the multimedia and shared multimedia directories again"
diff --git a/scripts/actions/add_multimedia_directories b/scripts/actions/add_multimedia_directories
new file mode 100755
index 0000000..4dc7881
--- /dev/null
+++ b/scripts/actions/add_multimedia_directories
@@ -0,0 +1,66 @@
+#!/bin/bash
+
+#=================================================
+# GENERIC STARTING
+#=================================================
+# IMPORT GENERIC HELPERS
+#=================================================
+
+source scripts/_common.sh
+source /usr/share/yunohost/helpers
+
+#=================================================
+# RETRIEVE ARGUMENTS
+#=================================================
+
+app=$YNH_APP_INSTANCE_NAME
+
+final_path=$(ynh_app_setting_get --app=$app --key=final_path)
+
+#=================================================
+# CHECK IF ARGUMENTS ARE CORRECT
+#=================================================
+
+#=================================================
+# DEFINE FUNCTION
+#=================================================
+
+# Define a function to execute commands with `occ`
+exec_occ() {
+  (cd "$final_path" && exec_as "$app" \
+      php$YNH_PHP_VERSION 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
+}
+
+#=================================================
+# SPECIFIC ACTION
+#=================================================
+# YUNOHOST MULTIMEDIA INTEGRATION
+#=================================================
+ynh_script_progression --message="Updating multimedia directories..." --weight=6
+
+# Build YunoHost multimedia directories
+ynh_multimedia_build_main_dir
+# Mount the user directory in Nextcloud
+exec_occ app:enable files_external
+create_external_storage "/home/yunohost.multimedia/\$user" "Multimedia"
+create_external_storage "/home/yunohost.multimedia/share" "Shared multimedia"
+# Allow nextcloud to write into these directories
+ynh_multimedia_addaccess $app
+
+#=================================================
+# END OF SCRIPT
+#=================================================
+
+ynh_script_progression --message="Execution completed" --last
diff --git a/scripts/upgrade b/scripts/upgrade
index eb9c261..a6a467b 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -403,20 +403,6 @@ exec_occ background:cron
 # Set system group in hooks
 ynh_replace_string --match_string="__GROUP__" --replace_string="$app" --target_file=../hooks/post_user_create
 
-#=================================================
-# YUNOHOST MULTIMEDIA INTEGRATION
-#=================================================
-ynh_script_progression --message="Updating multimedia directories..." --weight=6
-
-# Build YunoHost multimedia directories
-ynh_multimedia_build_main_dir
-# Mount the user directory in Nextcloud
-exec_occ app:enable files_external
-create_external_storage "/home/yunohost.multimedia/\$user" "Multimedia"
-create_external_storage "/home/yunohost.multimedia/share" "Shared multimedia"
-# Allow nextcloud to write into these directories
-ynh_multimedia_addaccess $app
-
 #=================================================
 # GENERIC FINALIZATION
 #=================================================