diff --git a/rhodecode/authentication/registry.py b/rhodecode/authentication/registry.py
--- a/rhodecode/authentication/registry.py
+++ b/rhodecode/authentication/registry.py
@@ -96,7 +96,7 @@ class AuthenticationPluginRegistry(objec
 
             # Add the fallback plugin from ini file.
             if fallback_plugin:
-                log.warn(
+                log.warning(
                     'Using fallback authentication plugin from INI file: "%s"',
                     fallback_plugin)
                 plugin = self.get_plugin(fallback_plugin)
diff --git a/rhodecode/authentication/routes.py b/rhodecode/authentication/routes.py
--- a/rhodecode/authentication/routes.py
+++ b/rhodecode/authentication/routes.py
@@ -132,9 +132,9 @@ class AuthnRootResource(AuthnResourceBas
         # Allow plugin resources with identical names by rename duplicates.
         unique_name = _ensure_unique_name(resource.__name__)
         if unique_name != resource.__name__:
-            log.warn('Name collision for traversal resource "%s" registered '
-                     'by authentication plugin "%s"', resource.__name__,
-                     plugin_id)
+            log.warning('Name collision for traversal resource "%s" registered '
+                        'by authentication plugin "%s"', resource.__name__,
+                        plugin_id)
             resource.__name__ = unique_name
 
         log.debug('Register traversal resource "%s" for plugin "%s"',