diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index baf062ec3..8e7fa36eb 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="8.4+ds-1"
-export PIKA_PACKAGE_NAME="wcslib"
+export PIKA_PACKAGE_VERSION="0.7-2"
+export PIKA_PACKAGE_NAME="gfan"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"