diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 8f22d7710..05c65a621 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.3.6-2"
-export PIKA_PACKAGE_NAME="tools-reader-clojure"
+export PIKA_PACKAGE_VERSION="5.20241220-1"
+export PIKA_PACKAGE_NAME="libcpan-perl-releases-perl"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"