diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index a559d1401..6d9e15336 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="6.9-1"
-export PIKA_PACKAGE_NAME="mercurial"
+export PIKA_PACKAGE_VERSION="5.2.0-1"
+export PIKA_PACKAGE_NAME="jruby-utils-clojure"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"