diff --git a/scripts/backup b/scripts/backup
index 8af0451..602cb5e 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -20,6 +20,13 @@ ynh_print_info --message="Declaring files to be backed up..."
 
 ynh_backup --src_path="$install_dir"
 
+#=================================================
+# BACKUP THE DATA DIR
+#=================================================
+
+# Only relevant if there is a "data_dir" resource for this app
+ynh_backup --src_path="$data_dir" --is_big
+
 #=================================================
 # BACKUP THE NGINX CONFIGURATION
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 6e0a9ef..32d510c 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -20,6 +20,16 @@ ynh_restore_file --origin_path="$install_dir"
 chmod -R o-rwx "$install_dir"
 chown -R $app:www-data "$install_dir"
 
+#=================================================
+# RESTORE THE DATA DIRECTORY
+#=================================================
+ynh_script_progression --message="Restoring the data directory..." --weight=1
+
+ynh_restore_file --origin_path="$data_dir" --not_mandatory
+
+# (Same as for install dir)
+chown -R $app:www-data "$data_dir"
+
 #=================================================
 # RESTORE THE MYSQL DATABASE
 #=================================================