diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index f50c7d129..e90426165 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="20240607.gitc054c32-1"
-export PIKA_PACKAGE_NAME="cl-nibbles"
+export PIKA_PACKAGE_VERSION="0.19.1-4"
+export PIKA_PACKAGE_NAME="elm-compiler"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"