diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index cf05b223d..66aa35d66 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2.23-26-1"
-export PIKA_PACKAGE_NAME="kernsmooth"
+export PIKA_PACKAGE_VERSION="2025.01.01"
+export PIKA_PACKAGE_NAME="debian-ports-archive-keyring"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"