diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index e31a87fe7..b13132008 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.9.6-6"
-export PIKA_PACKAGE_NAME="rust-snow"
+export PIKA_PACKAGE_VERSION="1.0.3-4"
+export PIKA_PACKAGE_NAME="rust-serde-fmt"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"