diff --git a/requirements.txt b/requirements.txt
index 2fab040..05db063 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
+backports.csv==1.0.6
 certifi==2017.7.27.1
 chardet==3.0.4
 et-xmlfile==1.0.1