diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 46e520dc4..defc60208 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.29.7-3"
-export PIKA_PACKAGE_NAME="nxt-firmware"
+export PIKA_PACKAGE_VERSION="0.20.0+ds-2.1"
+export PIKA_PACKAGE_NAME="jsonnet"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"