diff --git a/services/monitoring/pyroscope.nix b/services/monitoring/pyroscope.nix
index 83fbf4d..03274ef 100644
--- a/services/monitoring/pyroscope.nix
+++ b/services/monitoring/pyroscope.nix
@@ -3,6 +3,6 @@
   virtualisation.oci-containers.containers.pyroscope = {
     pull = "missing";
     image = "grafana/pyroscope:latest";
-    ports = "4040:4040";
+    ports = [ "4040:4040" ];
   };
 }