diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 2d1bdea22..e2eda05ba 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="5.3.0-6"
-export PIKA_PACKAGE_NAME="lua-bit32"
+export PIKA_PACKAGE_VERSION="1.8.4-4"
+export PIKA_PACKAGE_NAME="php-kissifrot-php-ixr"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"