diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 594a90141..c3ae2fe0c 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="4.3.0-1"
-export PIKA_PACKAGE_NAME="toml11"
+export PIKA_PACKAGE_VERSION="3.0.0-6"
+export PIKA_PACKAGE_NAME="python-tblib"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"