diff --git a/.changeset/lovely-drinks-argue.md b/.changeset/lovely-drinks-argue.md
new file mode 100644
index 000000000..8a279fcd4
--- /dev/null
+++ b/.changeset/lovely-drinks-argue.md
@@ -0,0 +1,5 @@
+---
+'@verdaccio/loaders': patch
+---
+
+always create plugin instance with new
diff --git a/packages/loaders/src/plugin-loader.ts b/packages/loaders/src/plugin-loader.ts
index 0ff0a0b91..10fe641df 100644
--- a/packages/loaders/src/plugin-loader.ts
+++ b/packages/loaders/src/plugin-loader.ts
@@ -121,7 +121,7 @@ export function loadPlugin<T extends IPlugin<T>>(
     try {
       plugin = isES6(plugin)
         ? new plugin.default(mergeConfig(config, pluginConfigs[pluginId]), params)
-        : plugin(pluginConfigs[pluginId], params);
+        : new plugin(pluginConfigs[pluginId], params);
     } catch (error: any) {
       plugin = null;
       logger.error({ error, pluginId }, 'error loading a plugin @{pluginId}: @{error}');