diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 66a1f395e..ca91aafdb 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.25.0-2"
-export PIKA_PACKAGE_NAME="golang-github-evanw-esbuild"
+export PIKA_PACKAGE_VERSION="4.2-3"
+export PIKA_PACKAGE_NAME="python-rarfile"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"