diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index b1fdf99b7..a98a9ed9e 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.6.7-3"
-export PIKA_PACKAGE_NAME="haskell-x509-system"
+export PIKA_PACKAGE_VERSION="4.0.3-2"
+export PIKA_PACKAGE_NAME="buildbot"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"