diff --git a/avatar/conf.py b/avatar/conf.py
index e25ee91..de0e420 100644
--- a/avatar/conf.py
+++ b/avatar/conf.py
@@ -8,7 +8,7 @@ class AvatarConf(AppConf):
     DEFAULT_SIZE = 80
     RESIZE_METHOD = Image.ANTIALIAS
     STORAGE_DIR = 'avatars'
-    GRAVATAR_BASE_URL = 'http://www.gravatar.com/avatar/'
+    GRAVATAR_BASE_URL = 'https://www.gravatar.com/avatar/'
     GRAVATAR_BACKUP = True
     GRAVATAR_DEFAULT = None
     DEFAULT_URL = 'avatar/img/default.jpg'