diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index a75980d25..055173aee 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.36.1-5"
-export PIKA_PACKAGE_NAME="python-eventlet"
+export PIKA_PACKAGE_VERSION="4.19.2-4"
+export PIKA_PACKAGE_NAME="python-jsonschema"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"