diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index e776d7929..1b2bf0001 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.12.1-2"
-export PIKA_PACKAGE_NAME="rust-mockall-derive"
+export PIKA_PACKAGE_VERSION="1.6-4.1"
+export PIKA_PACKAGE_NAME="python-cymruwhois"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"