diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index b54db664a..073ed098a 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="274"
-export PIKA_PACKAGE_NAME="diffoscope"
+export PIKA_PACKAGE_VERSION="0.16.0-9"
+export PIKA_PACKAGE_NAME="ocamldsort"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"