diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 2f31e2525..9ea0d4bc9 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2.6.1-1"
-export PIKA_PACKAGE_NAME="r-cran-r6"
+export PIKA_PACKAGE_VERSION="1.3.0+ds-1"
+export PIKA_PACKAGE_NAME="r-cran-plumber"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b3"