diff --git a/pkgs/servers/monitoring/prometheus/imap-mailstat-exporter.nix b/pkgs/servers/monitoring/prometheus/imap-mailstat-exporter.nix
index fbd5b162a695..e603c2a8811d 100644
--- a/pkgs/servers/monitoring/prometheus/imap-mailstat-exporter.nix
+++ b/pkgs/servers/monitoring/prometheus/imap-mailstat-exporter.nix
@@ -15,7 +15,7 @@ buildGoModule rec {
     hash = "sha256-aR/94C9SI+FPs3zg3bpexmgGYrhxghyHwpXj25x0yuw=";
   };
 
-  vendorSha256 = "sha256-M5Ho4CiO5DC6mWzenXEo2pu0WLHj5S8AV3oEFwD31Sw=";
+  vendorHash = "sha256-M5Ho4CiO5DC6mWzenXEo2pu0WLHj5S8AV3oEFwD31Sw=";
 
   nativeBuildInputs = [ installShellFiles ];