diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index c644b0dc5..92cbe83ea 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.15~pre2-1"
-export PIKA_PACKAGE_NAME="lzlib"
+export PIKA_PACKAGE_VERSION="1.4.2-1"
+export PIKA_PACKAGE_NAME="tdigest"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"