diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index c1207193c..d0e5918cc 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.2.1-1"
-export PIKA_PACKAGE_NAME="rust-git-testament-derive"
+export PIKA_PACKAGE_VERSION="3.1.3-2"
+export PIKA_PACKAGE_NAME="flint"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"