diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index b810e8c1b..36d77d49b 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="5.1.1-2"
-export PIKA_PACKAGE_NAME="python-castellan"
+export PIKA_PACKAGE_VERSION="2.4.0-2"
+export PIKA_PACKAGE_NAME="python-oslo.upgradecheck"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"