diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index a862e0951..c0c34af19 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2.10.2-1"
-export PIKA_PACKAGE_NAME="numexpr"
+export PIKA_PACKAGE_VERSION="1:19.0.0-2"
+export PIKA_PACKAGE_NAME="barbican"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"