diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 645b5b738..e59ead1f7 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="6.7.2-5"
-export PIKA_PACKAGE_NAME="qt6-connectivity"
+export PIKA_PACKAGE_VERSION="0.3.1-2"
+export PIKA_PACKAGE_NAME="rust-primal-slowsieve"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"