diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 98052a7c1..28dc8f6e5 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="4.5.8-1"
-export PIKA_PACKAGE_NAME="exchange-calendars"
+export PIKA_PACKAGE_VERSION="4.1.3-1"
+export PIKA_PACKAGE_NAME="puppet-strings"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"