diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index a7fcf4ffd..d6f876fb1 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.1.16-1"
-export PIKA_PACKAGE_NAME="r-cran-sem"
+export PIKA_PACKAGE_VERSION="2.8.0-1"
+export PIKA_PACKAGE_NAME="r-cran-loo"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"