diff --git a/nixos/modules/services/monitoring/grafana.nix b/nixos/modules/services/monitoring/grafana.nix
index b959379d331a..3e0d1eb050db 100644
--- a/nixos/modules/services/monitoring/grafana.nix
+++ b/nixos/modules/services/monitoring/grafana.nix
@@ -109,6 +109,11 @@ let
         default = 1;
         description = "Org id. will default to orgId 1 if not specified.";
       };
+      uid = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        description = "Custom UID which can be used to reference this datasource in other parts of the configuration, if not specified will be generated automatically.";
+      };
       url = mkOption {
         type = types.str;
         description = "Url of the datasource.";