diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index a3762a4ea..0287e1369 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="2.12.0.0-3"
-export PIKA_PACKAGE_NAME="haskell-persistent-template"
+export PIKA_PACKAGE_VERSION="1.0.2-3"
+export PIKA_PACKAGE_NAME="haskell-utf8-string"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"