diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 22710e1d8..801d546f1 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.3-1"
-export PIKA_PACKAGE_NAME="libunistring"
+export PIKA_PACKAGE_VERSION="3.0045"
+export PIKA_PACKAGE_NAME="ucf"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"