diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 34b4c6c36..000025f99 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1:128.1.0esr-1"
-export PIKA_PACKAGE_NAME="thunderbird"
+export PIKA_PACKAGE_VERSION="5.2.2-2"
+export PIKA_PACKAGE_NAME="lxml"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"