diff --git a/elasticsearch/client/__init__.py b/elasticsearch/client/__init__.py
index bf840693..abc9cd8c 100644
--- a/elasticsearch/client/__init__.py
+++ b/elasticsearch/client/__init__.py
@@ -32,7 +32,7 @@ def _normalize_hosts(hosts):
             host = host.strip('/')
             # remove schema information
             if '://' in host:
-                logger.warn(
+                logger.warning(
                     "List of nodes should not include schema information (http://): %r.",
                     host
                 )