diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index cb6a6fa5a..1320984e9 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="8.0.1956-1"
-export PIKA_PACKAGE_NAME="pike8.0"
+export PIKA_PACKAGE_VERSION="5.11-1"
+export PIKA_PACKAGE_NAME="python-marshmallow-polyfield"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"