diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index b8dac8f98..ee81a0472 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="5.13.4-1"
-export PIKA_PACKAGE_NAME="ecflow"
+export PIKA_PACKAGE_VERSION="4.0.5-2"
+export PIKA_PACKAGE_NAME="haskell-debian"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"