diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index c77285f58..4c8d5ede1 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.11-6"
-export PIKA_PACKAGE_NAME="haskell-yi-rope"
+export PIKA_PACKAGE_VERSION="0.4-9"
+export PIKA_PACKAGE_NAME="haskell-natural-transformation"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b3"