diff --git a/pkgs/by-name/gr/grafana-reporter/package.nix b/pkgs/by-name/gr/grafana-reporter/package.nix
index c7cb567d5722..04a740d1bddb 100644
--- a/pkgs/by-name/gr/grafana-reporter/package.nix
+++ b/pkgs/by-name/gr/grafana-reporter/package.nix
@@ -1,8 +1,10 @@
-{ lib
-, buildGoModule
-, fetchFromGitHub
-, tetex
-, makeWrapper
+{
+  lib,
+  buildGoModule,
+  fetchFromGitHub,
+  fetchpatch2,
+  tetex,
+  makeWrapper,
 }:
 buildGoModule rec {
   pname = "reporter";
@@ -17,20 +19,21 @@ buildGoModule rec {
 
   nativeBuildInputs = [ makeWrapper ];
 
-  vendorHash = null;
+  vendorHash = "sha256-QlNOx2jm1LVz066t9khppf//T5c9z3YUrSOr6qzbUzI=";
 
-  postPatch = ''
-    go mod init github.com/IzakMarais/reporter
-  '';
+  patches = [
+    (fetchpatch2 {
+      name = "use-go-mod-and-remove-vendor-dirs";
+      url = "https://github.com/IzakMarais/reporter/commit/e844b3f624e0da3a960f98cade427fe54f595504.patch";
+      hash = "sha256-CdI7/mkYG6t6H6ydGu7atwk18DpagdP7uzfrZVKKlhA=";
+    })
+  ];
 
   postInstall = ''
     wrapProgram $out/bin/grafana-reporter \
       --prefix PATH : ${lib.makeBinPath [ tetex ]}
   '';
 
-  # Testing library used had a breaking API change and upstream didn't adapt.
-  doCheck = false;
-
   meta = {
     description = "PDF report generator from a Grafana dashboard";
     mainProgram = "grafana-reporter";