diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index a8aca4ff3..b5748465b 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.6.20-35"
-export PIKA_PACKAGE_NAME="rust-axum"
+export PIKA_PACKAGE_VERSION="0.4.2-1"
+export PIKA_PACKAGE_NAME="rust-diffutils"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"