diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 0c84b0593..c17eda51e 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="11.5.12-1"
-export PIKA_PACKAGE_NAME="phpunit"
+export PIKA_PACKAGE_VERSION="3.7.9+dfsg-1"
+export PIKA_PACKAGE_NAME="genx"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"