diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 66e13689b..bd80aa100 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.1.3-3"
-export PIKA_PACKAGE_NAME="rust-ulid"
+export PIKA_PACKAGE_VERSION="5.2.1-1"
+export PIKA_PACKAGE_NAME="rainbows"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"