diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 155c92847..29443ed9d 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.4.3-4"
-export PIKA_PACKAGE_NAME="rust-vec-collections"
+export PIKA_PACKAGE_VERSION="2.1.2-3"
+export PIKA_PACKAGE_NAME="python-jsonrpc-async"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"