diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 28d821eee..4289b0820 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.29.5-3"
-export PIKA_PACKAGE_NAME="rust-wayland-protocols-0.29"
+export PIKA_PACKAGE_VERSION="0.4.0a0-3"
+export PIKA_PACKAGE_NAME="sphinxcontrib-towncrier"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"