diff --git a/ci-tools/update-nixpkgs b/ci-tools/update-nixpkgs
index f7b326c9a7b8158cf1b5b5d36cc013492ef1e444..539de764461be472f3aa778742d5851ce47e696e 100755
--- a/ci-tools/update-nixpkgs
+++ b/ci-tools/update-nixpkgs
@@ -9,6 +9,8 @@
 
 set -eux -o pipefail
 
+HOST="whetstone.private.storage"
+
 setup_ssh() {
     # -s makes the output sh compatible, in case it can't detect this for
     # itself.