diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 4ad8ee991..646237399 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="24.08.0-1"
-export PIKA_PACKAGE_NAME="ksmtp"
+export PIKA_PACKAGE_VERSION="1.23.0-1"
+export PIKA_PACKAGE_NAME="delve"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b3"