diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 13e8078d7..80e90ca85 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="4.7.1-3"
-export PIKA_PACKAGE_NAME="rust-async-task"
+export PIKA_PACKAGE_VERSION="0.13.4+ds-1"
+export PIKA_PACKAGE_NAME="pyspectral"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"