diff --git a/grafana/server.sls b/grafana/server.sls
index dc6698d..d60a7b9 100644
--- a/grafana/server.sls
+++ b/grafana/server.sls
@@ -3,7 +3,7 @@
 
 grafana_packages:
   pkg.installed:
-  - names: {{ server.pkgs }}
+  - names: {{ server.pkgs|tojson }}
 
 /etc/grafana/grafana.ini:
   file.managed: