diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 349c808ee..f9e245412 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="128.0.3-2"
-export PIKA_PACKAGE_NAME="firefox"
+export PIKA_PACKAGE_VERSION="0.4.2-2"
+export PIKA_PACKAGE_NAME="python-gplearn"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"