diff --git a/requirements.txt b/requirements.txt
index 5dbc58d..cb4357c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ et-xmlfile==1.0.1
 gunicorn==19.7.1
 html5lib==1.0.1
 jdcal==1.4
-kombu==4.2.1
+kombu==4.0.2
 lxml==4.2.3
 odfpy==1.3.6
 openpyxl==2.5.4