diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index f76d4b1ae..edcd0d868 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.1-3"
-export PIKA_PACKAGE_NAME="emacs-memoize"
+export PIKA_PACKAGE_VERSION="2.2-4"
+export PIKA_PACKAGE_NAME="perspective-el"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"