diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index f1f0a3c0e..52d2299c2 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.9.1-2"
-export PIKA_PACKAGE_NAME="nltk"
+export PIKA_PACKAGE_VERSION="3.1.0+dfsg2-9"
+export PIKA_PACKAGE_NAME="xmds2"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"