diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 0e338cc3d..67d6a1a91 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2.1.5+git20230830.1.f40ece5-2"
-export PIKA_PACKAGE_NAME="rainbow-delimiters"
+export PIKA_PACKAGE_VERSION="1.2.1-4"
+export PIKA_PACKAGE_NAME="bui-el"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"