diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index cbf9bfeaa..75e74af14 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.10.1-1"
-export PIKA_PACKAGE_NAME="cyrus-imapd"
+export PIKA_PACKAGE_VERSION="0.2.12+ds-1"
+export PIKA_PACKAGE_NAME="ruamel.yaml.clib"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"