diff --git a/docs/cache-event-task.md b/docs/cache-event-task.md
index ebb4760a2e272817cd1d45697bcdb0d243a8e4c2..7c6ad78e89050c612fae47ffd7c8a23522674a77 100644
--- a/docs/cache-event-task.md
+++ b/docs/cache-event-task.md
@@ -1,5 +1,15 @@
 # Task Service - Cache Event Task Documentation
 
+### Subscribe for Cache events
+
+Current implementation uses NATS as a messaging system for events.
+There are two environment variables that need to be set for subscribing for cache events.
+
+```shell
+NATS_ADDR="example.com:4222"
+NATS_SUBJECT="subject"
+```
+
 ### Event Task definition
 
 In order to create a Task upon receiving a Cache event an `event task template` **must**