diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 8575c2115..5c4716399 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.4.0-0.1"
-export PIKA_PACKAGE_NAME="libfm"
+export PIKA_PACKAGE_VERSION="1.3.12-18"
+export PIKA_PACKAGE_NAME="mtx"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"