diff --git a/scripts/upgrade b/scripts/upgrade
index 6f3e934..35af4c2 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -29,6 +29,15 @@ if [[ -z "${secret_key:-}" ]]; then
 	ynh_app_setting_set --app=$app --key=secret_key --value=$secret_key
 fi
 
+#=================================================
+# BACKUP SQLITE DATABASE
+#=================================================
+ynh_script_progression --message="Backup of the DB in temporary file...." --weight=5
+
+if [ -f "$install_dir/data/association.sqlite" ];then
+cp -a $install_dir/data/association.sqlite /tmp/
+fi
+
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
@@ -76,6 +85,11 @@ fi
 ynh_add_config --template="config.local.php" --destination="$install_dir/config.local.php"
 ynh_add_config --template="config.local.yunohost.php" --destination="$install_dir/config.local.yunohost.php"
 
+# Restore the sqlite DB
+if [ -f "/tmp/association.sqlite" ];then
+mv /tmp/association.sqlite $install_dir/data
+fi
+
 # Permissions on files and directories
 chmod -R o-rwx "$install_dir"
 chown -R $app:www-data "$install_dir"