diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index c9754028a..5bd285603 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.1.7-1"
-export PIKA_PACKAGE_NAME="ruby-ammeter"
+export PIKA_PACKAGE_VERSION="0.10.14-1"
+export PIKA_PACKAGE_NAME="ruby-active-model-serializers"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b3"