diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 0bdaaa972..0e4ba8e40 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="4.2.0+ds-1"
-export PIKA_PACKAGE_NAME="python-osmapi"
+export PIKA_PACKAGE_VERSION="0.4-5"
+export PIKA_PACKAGE_NAME="python-pytest-toolbox"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"