diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index f3c6a338a..74095a568 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.5.2-2"
-export PIKA_PACKAGE_NAME="duff"
+export PIKA_PACKAGE_VERSION="0.3.4-1"
+export PIKA_PACKAGE_NAME="rust-slice-ring-buffer"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"