diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 7617d6de8..2d6b35828 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.18.1-1"
-export PIKA_PACKAGE_NAME="python-apischema"
+export PIKA_PACKAGE_VERSION="2.1.3-1"
+export PIKA_PACKAGE_NAME="python-sse-starlette"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"