diff --git a/requirements.txt b/requirements.txt
index d6d65ae2..7e3b8077 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
+# Python-3.6
 Django==2.0.1
 django-anymail[mailgun]==1.2
 paymentwall-python==1.0.7