diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index f15557939..22710e1d8 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.1.8-2"
-export PIKA_PACKAGE_NAME="sp800-90b-entropy-assessment"
+export PIKA_PACKAGE_VERSION="1.3-1"
+export PIKA_PACKAGE_NAME="libunistring"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"