diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 9ae50b208..227c7c91d 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.000156-1"
-export PIKA_PACKAGE_NAME="libtest2-harness-perl"
+export PIKA_PACKAGE_VERSION="1:4.4.1+ds-1"
+export PIKA_PACKAGE_NAME="singular"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"