diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 08004121a..16d5dde97 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.3.1-2"
-export PIKA_PACKAGE_NAME="rust-buffered-reader"
+export PIKA_PACKAGE_VERSION="1.18.0-1"
+export PIKA_PACKAGE_NAME="specutils"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"