diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index f99664f74..8cb02ad79 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.17.1-1"
-export PIKA_PACKAGE_NAME="ocaml-intrinsics-kernel"
+export PIKA_PACKAGE_VERSION="0.40-1"
+export PIKA_PACKAGE_NAME="python-aioruckus"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"