diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 91aa7dffb..46e0c0589 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.0.3-2"
-export PIKA_PACKAGE_NAME="exprtk"
+export PIKA_PACKAGE_VERSION="1.5.1-1.2"
+export PIKA_PACKAGE_NAME="freezegun"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"