diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index d349f4961..9da90495a 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.4.3-2"
-export PIKA_PACKAGE_NAME="python-plac"
+export PIKA_PACKAGE_VERSION="1.6.2+dfsg-12"
+export PIKA_PACKAGE_NAME="python-mbed-ls"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"