diff --git a/spyder/plugins/maininterpreter/container.py b/spyder/plugins/maininterpreter/container.py
index 1d954684b58..8a2f2b7a813 100644
--- a/spyder/plugins/maininterpreter/container.py
+++ b/spyder/plugins/maininterpreter/container.py
@@ -8,6 +8,7 @@
 """Main interpreter container."""
 
 # Standard library imports
+import logging
 import os
 import os.path as osp
 import sys
@@ -27,6 +28,9 @@
 from spyder.utils.workers import WorkerManager
 
 
+logger = logging.getLogger(__name__)
+
+
 class MainInterpreterContainer(PluginMainContainer):
 
     sig_interpreter_changed = Signal(str)
@@ -217,6 +221,7 @@ def _finish_updating_envs(self, worker, output, error):
     def _update_interpreter(self, interpreter=None):
         """Set main interpreter and update information."""
         if interpreter:
+            logger.debug(f"Main interpreter changed to {interpreter}")
             self._interpreter = interpreter
 
         if self._interpreter not in self.path_to_env: