diff --git a/requirements/base.txt b/requirements/base.txt
index 87457929b9..35ecafaa5b 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -1,6 +1,6 @@
 six~=1.11.0
 click~=6.7
-enum34~=1.1.6
+enum34~=1.1.6; python_version<"3.4"
 Flask~=1.0.2
 boto3~=1.5
 PyYAML~=3.12