diff --git a/requirements/prod.txt b/requirements/prod.txt
index 1799a57..11736ac 100644
--- a/requirements/prod.txt
+++ b/requirements/prod.txt
@@ -1,5 +1,6 @@
 # pint version limit for pint.quantity
 pint<=0.19.2
+
 # for dump functions
 dill<=0.3.5.1
 scipy