diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 933566c0f..81979b842 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.0.0+dfsg-2"
-export PIKA_PACKAGE_NAME="seqdiag"
+export PIKA_PACKAGE_VERSION="8.18.1-6"
+export PIKA_PACKAGE_NAME="sendmail"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"