diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 3faa72a6b..0a6c32f13 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="13.9.1-1"
-export PIKA_PACKAGE_NAME="pyqt6-sip"
+export PIKA_PACKAGE_VERSION="0.4.5-1"
+export PIKA_PACKAGE_NAME="libspelling"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"