diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 31db73d60..0cab1a99a 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="4.04.00-2"
-export PIKA_PACKAGE_NAME="stealth"
+export PIKA_PACKAGE_VERSION="1.4.19-7"
+export PIKA_PACKAGE_NAME="m4"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"