diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index f5ce34868..8f43795b3 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.9.6-3"
-export PIKA_PACKAGE_NAME="libjsoncpp"
+export PIKA_PACKAGE_VERSION="0.2.0-1"
+export PIKA_PACKAGE_NAME="python-upstream-ontologist"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"