diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index f25b28c58..5ffd136c7 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="5.9-7"
-export PIKA_PACKAGE_NAME="zsh"
+export PIKA_PACKAGE_VERSION="1.10.4-1"
+export PIKA_PACKAGE_NAME="ui-utilcpp"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"