diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index ab29ec33d..27b97d3f4 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2.4.3+dfsg-1"
-export PIKA_PACKAGE_NAME="ants"
+export PIKA_PACKAGE_VERSION="1.06.dfsg-9"
+export PIKA_PACKAGE_NAME="gnustep-netclasses"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"