diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 6aefe4cd6..29c375568 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="6.0.8-2"
-export PIKA_PACKAGE_NAME="tryton-proteus"
+export PIKA_PACKAGE_VERSION="2.09-1"
+export PIKA_PACKAGE_NAME="libffi-platypus-perl"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"