diff -r dc3fca0131a7 -r 20975062661d prometheus/server/tasks/main.yaml
--- a/prometheus/server/tasks/main.yaml	Mon Feb 10 07:49:58 2020 -0600
+++ b/prometheus/server/tasks/main.yaml	Mon Feb 10 09:02:51 2020 -0600
@@ -17,6 +17,8 @@
   template:
     src: "{{prometheus_server_conf}}"
     dest: "/etc/prometheus/prometheus.yml"
-  notify: restart prometheus service
+  notify:
+    - restart prometheus service
+    - restart grafana service
 
 # /etc/grafana/grafana.ini