diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 9e301a57d..698274b6a 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.9.1+dfsg1-3"
-export PIKA_PACKAGE_NAME="flask-mail"
+export PIKA_PACKAGE_VERSION="5.39.0-1.6"
+export PIKA_PACKAGE_NAME="netw-ib-ox-ag"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"