diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 189fcb411..6c37a40f5 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="24.9.0-2"
-export PIKA_PACKAGE_NAME="foolscap"
+export PIKA_PACKAGE_VERSION="5.3.1-1"
+export PIKA_PACKAGE_NAME="golang-github-santhosh-tekuri-jsonschema"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"