diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 8a7f19446..5d933951e 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="5.3.6-2.1"
-export PIKA_PACKAGE_NAME="flask-socketio"
+export PIKA_PACKAGE_VERSION="3.1.10-1"
+export PIKA_PACKAGE_NAME="fcft"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"