diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index af031d12b..d0d70a31b 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.3.1-5"
-export PIKA_PACKAGE_NAME="rust-test-case"
+export PIKA_PACKAGE_VERSION="0.2.20-1"
+export PIKA_PACKAGE_NAME="haskell-unordered-containers"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"