diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 2e422a98b..43eba5872 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.6.3-1"
-export PIKA_PACKAGE_NAME="ocaml-rope"
+export PIKA_PACKAGE_VERSION="0.9-22"
+export PIKA_PACKAGE_NAME="mlpcap"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"