diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 86aadbd02..b00aa3607 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.0-15"
-export PIKA_PACKAGE_NAME="kwartz-client"
+export PIKA_PACKAGE_VERSION="39+nmu2"
+export PIKA_PACKAGE_NAME="usrmerge"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"