diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index ae3e631dd..408182d16 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="5.0.0+ds1-4"
-export PIKA_PACKAGE_NAME="jupyterhub"
+export PIKA_PACKAGE_VERSION="3.4.0-1"
+export PIKA_PACKAGE_NAME="python-opt-einsum"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"