diff --git a/devops/observability/grafana/docs/courses.txt b/devops/observability/grafana/docs/courses.txt
index e5322649c..429153bbe 100644
--- a/devops/observability/grafana/docs/courses.txt
+++ b/devops/observability/grafana/docs/courses.txt
@@ -11,3 +11,5 @@ Udemy - Grafana Beginners to Advance Crash Course 2021
     https://www.udemy.com/course/grafana-latest/
     magnet:?xt=urn:btih:c60f2bdb0bd42e38d13fa61f0736cade510f2725
     ! 1.93g
+Slurm - Ibraev Selivanov Guryanov - Grafana
+    nnm:1636263
diff --git a/pl/cross/messaging/kafka/docs/courses/courses.txt b/pl/cross/messaging/kafka/docs/courses/courses.txt
index c4a287860..bce98aa34 100644
--- a/pl/cross/messaging/kafka/docs/courses/courses.txt
+++ b/pl/cross/messaging/kafka/docs/courses/courses.txt
@@ -16,6 +16,8 @@ Udemy - Maaredk - Apache Kafka Series - Kafka Cluster Setup & Administration
     https://www.udemy.com/course/kafka-cluster-setup/
     magnet:?xt=urn:btih:dfb6fbd9da705b54f4c560fe0a1c51611922dc9f
     ! 1g, good
+Udemy - Stashchuk - The Complete Apache Kafka Practical Guide
+    nnm:1579588
 2021
 Confluent - Berglund - Apache Kafka Tutorials 101 of 19 parts
     https://developer.confluent.io/learn-kafka/apache-kafka/events/