diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 6863b1034..7cbef967a 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="1.2.5-2"
-export PIKA_PACKAGE_NAME="rake-compiler"
+export PIKA_PACKAGE_VERSION="4.6.2-1"
+export PIKA_PACKAGE_NAME="ser2net"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"