diff --git a/pkgs/by-name/si/sigsum/package.nix b/pkgs/by-name/si/sigsum/package.nix
index 8a0eb178efb6..6af6bdd11282 100644
--- a/pkgs/by-name/si/sigsum/package.nix
+++ b/pkgs/by-name/si/sigsum/package.nix
@@ -1,12 +1,12 @@
 {
   lib,
-  buildGoModule,
+  buildGo125Module,
   fetchFromGitLab,
   versionCheckHook,
   nix-update-script,
 }:
 
-buildGoModule (finalAttrs: {
+buildGo125Module (finalAttrs: {
   pname = "sigsum";
   version = "0.14.0";