diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index ae45495e9..a4d40b50f 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="20110624-10"
-export PIKA_PACKAGE_NAME="colortest"
+export PIKA_PACKAGE_VERSION="4.7x-1"
+export PIKA_PACKAGE_NAME="cproto"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"