diff --git a/traefik/files/traefik.toml b/traefik/files/traefik.toml
index 2bd0fbc..3828702 100644
--- a/traefik/files/traefik.toml
+++ b/traefik/files/traefik.toml
@@ -1,6 +1,6 @@
 {% for section in config -%}
 {#- [{{ section.key() }}] -#}
-{% for key, val in section.items() -%}
+{% for key, val in section.iteritems() -%}
 {{ key }} = {{ val }}
 {% endfor -%}
 {% endfor -%}