diff --git a/pkgs/servers/monitoring/prometheus/dmarc-metrics-exporter/default.nix b/pkgs/servers/monitoring/prometheus/dmarc-metrics-exporter/default.nix
index 169e14f75753..ca4822859792 100644
--- a/pkgs/servers/monitoring/prometheus/dmarc-metrics-exporter/default.nix
+++ b/pkgs/servers/monitoring/prometheus/dmarc-metrics-exporter/default.nix
@@ -1,6 +1,7 @@
-{ lib
-, python3
-, fetchFromGitHub
+{
+  lib,
+  python3,
+  fetchFromGitHub,
 }:
 
 python3.pkgs.buildPythonApplication rec {
@@ -24,15 +25,17 @@ python3.pkgs.buildPythonApplication rec {
     poetry-core
   ];
 
-  propagatedBuildInputs = with python3.pkgs; [
-    bite-parser
-    dataclasses-serialization
-    prometheus-client
-    structlog
-    uvicorn
-    xsdata
-  ]
-  ++ uvicorn.optional-dependencies.standard;
+  propagatedBuildInputs =
+    with python3.pkgs;
+    [
+      bite-parser
+      dataclasses-serialization
+      prometheus-client
+      structlog
+      uvicorn
+      xsdata
+    ]
+    ++ uvicorn.optional-dependencies.standard;
 
   nativeCheckInputs = with python3.pkgs; [
     aiohttp