1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/build-support/upstream-updater/update-upstream-data.sh b/pkgs/build-support/upstream-updater/update-upstream-data.sh
index b81a0da48400..f4861aa11d1e 100755
--- a/pkgs/build-support/upstream-updater/update-upstream-data.sh
+++ b/pkgs/build-support/upstream-updater/update-upstream-data.sh
@@ -75,7 +75,7 @@ prefetchClause=""
     "
     export NIX_HASH_ALGO=sha256
     rev="$(getAttr rev '')";
-    rev_and_hash="$("$own_dir"/../fetchgit/nix-prefetch-git "$repoUrl" "$rev" | tail -2)"
+    rev_and_hash="$("$own_dir"/../fetchgit/nix-prefetch-git "$repoUrl" "$rev" | tee /dev/stderr | tail -2)"
 
     rev="$(echo "$rev_and_hash" | head -1)"
     url="$repoUrl";