diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 310249aea..b8553c869 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.0.141-1"
-export PIKA_PACKAGE_NAME="rust-cxxbridge-flags"
+export PIKA_PACKAGE_VERSION="2.4.0-2.1"
+export PIKA_PACKAGE_NAME="smifb2"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"