diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 349ac7c60..a3887b9d8 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.6.4+dfsg-4"
-export PIKA_PACKAGE_NAME="ocaml-cairo2"
+export PIKA_PACKAGE_VERSION="2.1.0-3"
+export PIKA_PACKAGE_NAME="ocamlgraph"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"