diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index bf136bf6d..17f0452f4 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="4.0.2-1"
-export PIKA_PACKAGE_NAME="kissat"
+export PIKA_PACKAGE_VERSION="3.6.3-1.2"
+export PIKA_PACKAGE_NAME="sass-spec"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"