diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 9cc819639..f755fe0f5 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.1.5-6"
-export PIKA_PACKAGE_NAME="haskell-boxes"
+export PIKA_PACKAGE_VERSION="0.1.1+20230710-2"
+export PIKA_PACKAGE_NAME="gnustep-corebase"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"