diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 2aeec7215..c322d579a 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.2~git20170615.f752187-5.3"
-export PIKA_PACKAGE_NAME="jxrlib"
+export PIKA_PACKAGE_VERSION="1.14-1"
+export PIKA_PACKAGE_NAME="ocaml-zarith"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"