diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 2f8ff97a8..f21530135 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="4.2.3+ds-10"
-export PIKA_PACKAGE_NAME="bazel-bootstrap"
+export PIKA_PACKAGE_VERSION="2.11-1-1"
+export PIKA_PACKAGE_NAME="r-cran-spam"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"