diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 04fcec99c..554aa7c4d 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.1.1-2"
-export PIKA_PACKAGE_NAME="haskell-th-env"
+export PIKA_PACKAGE_VERSION="2024.05.31-1"
+export PIKA_PACKAGE_NAME="lapackpp"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"