diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index fcfead858..c5ceced9d 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.0.23-1"
-export PIKA_PACKAGE_NAME="rust-ref-cast-impl"
+export PIKA_PACKAGE_VERSION="0.4.3-5"
+export PIKA_PACKAGE_NAME="rust-vec-collections"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"