diff --git a/scripts/upgrade b/scripts/upgrade
index 9302be3..e82ff81 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -22,6 +22,9 @@ ynh_app_setting_set $app calibre_dir $calibre_dir
 upload=$(sqlite3 $install_dir/app.db "SELECT config_uploading FROM settings WHERE ID=1")
 ynh_app_setting_set $app upload $upload
 
+language=$(sqlite3 $install_dir/app.db "SELECT config_default_locale FROM settings WHERE ID=1")
+ynh_app_setting_set $app language $language
+
 #=================================================
 # CHECK VERSION
 #=================================================
diff --git a/tests.toml b/tests.toml
index 484efb0..7faca35 100644
--- a/tests.toml
+++ b/tests.toml
@@ -10,5 +10,5 @@ test_format = 1.0
     # Commits to test upgrade from
     # -------------------------------
 
-    test_upgrade_from.30f2c9d.name = "Upgrade from 0.6.20~ynh1"
+    test_upgrade_from.b8f9f95.name = "0.6.19~ynh8"