diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index e97c53919..2cd867fe7 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.4.2+dfsg-1"
-export PIKA_PACKAGE_NAME="libyang3"
+export PIKA_PACKAGE_VERSION="16.0.0-1"
+export PIKA_PACKAGE_NAME="ocaml-uucd"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"