diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index d3d2f1be4..fd35eb58e 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.6-3"
-export PIKA_PACKAGE_NAME="python-monotonic"
+export PIKA_PACKAGE_VERSION="1:5.3.0-4"
+export PIKA_PACKAGE_NAME="python-mistralclient"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"