diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index b482d4c0e..c8bdb0fc5 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="5.0.0-1"
-export PIKA_PACKAGE_NAME="rust-process-control"
+export PIKA_PACKAGE_VERSION="2.6.0-1"
+export PIKA_PACKAGE_NAME="librdkafka"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"