diff --git a/plugins/plugin_manager.py b/plugins/plugin_manager.py
index cecf75d..1cfd76c 100644
--- a/plugins/plugin_manager.py
+++ b/plugins/plugin_manager.py
@@ -151,6 +151,8 @@ class PluginManager:
                     self.disable_plugin(name)
                     failed_plugins.append(name)
                     continue
+                if name in self.instances:
+                    self.instances[name].handlers.clear()
                 self.instances[name] = instance
                 for event in instance.handlers:
                     if event not in self.listening_plugins:
@@ -165,6 +167,8 @@ class PluginManager:
             for event in self.listening_plugins:
                 if name in self.listening_plugins[event]:
                     self.listening_plugins[event].remove(name)
+            if name in self.instances:
+                self.instances[name].handlers.clear()
             del self.instances[name]
             self.activate_plugins()
             return True