diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 2648e4f3b..0a0ae73e0 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="4.13.0-1"
-export PIKA_PACKAGE_NAME="nanoc"
+export PIKA_PACKAGE_VERSION="4.12-3"
+export PIKA_PACKAGE_NAME="polymake"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"