diff --git a/pkgs/top-level/metrics.nix b/pkgs/top-level/metrics.nix
index 44cf87f1094..2a54566ef4a 100644
--- a/pkgs/top-level/metrics.nix
+++ b/pkgs/top-level/metrics.nix
@@ -12,6 +12,7 @@ runCommand "nixpkgs-metrics"
     nix-store --init
 
     mkdir -p $out/nix-support
+    touch $out/nix-support/hydra-build-products
 
     run() {
       local name="$1"