diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 8b7123497..ea64389b4 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.3.0+ds1-4"
-export PIKA_PACKAGE_NAME="rsync"
+export PIKA_PACKAGE_VERSION="4.5.2+ds-1"
+export PIKA_PACKAGE_NAME="r-cran-ff"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"