diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 8f9d5c5ae..80b90c701 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.2.0-4"
-export PIKA_PACKAGE_NAME="authres"
+export PIKA_PACKAGE_VERSION="15-20250112-1"
+export PIKA_PACKAGE_NAME="gcc-15"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"