diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index d8c6c8e1c..5d8dc3196 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.8.0-1"
-export PIKA_PACKAGE_NAME="python-milc"
+export PIKA_PACKAGE_VERSION="3.1.0-1"
+export PIKA_PACKAGE_NAME="file-read-backwards"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"