diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 9d4ed64dd..54211cef8 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.1.20250110105449-2"
-export PIKA_PACKAGE_NAME="cwltool"
+export PIKA_PACKAGE_VERSION="2.32.6-1"
+export PIKA_PACKAGE_NAME="r-cran-rstan"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"