diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index a1dcc5478..b7694ba15 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.1.1-1"
-export PIKA_PACKAGE_NAME="haskell-isomorphism-class"
+export PIKA_PACKAGE_VERSION="0.57-1"
+export PIKA_PACKAGE_NAME="libxml-hash-xs-perl"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"