diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 53d6e04fa..dc84b325b 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="6.8.1-1"
-export PIKA_PACKAGE_NAME="mercurial"
+export PIKA_PACKAGE_VERSION="0.18.0-2"
+export PIKA_PACKAGE_NAME="jpy"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"