diff --git a/asv/plugin_manager.py b/asv/plugin_manager.py
index d1c75ec5a..d8f39ef03 100644
--- a/asv/plugin_manager.py
+++ b/asv/plugin_manager.py
@@ -7,7 +7,7 @@
 from . import commands, plugins
 from .console import log
 
-ENV_PLUGINS = [".mamba", ".virtualenv", ".conda", ".rattler"]
+ENV_PLUGINS = [".mamba", "._mamba_helpers", ".virtualenv", ".conda", ".rattler"]
 
 class PluginManager:
     """