diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index f442e7e70..d407219fd 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="4.1.0+ds-1"
-export PIKA_PACKAGE_NAME="libzonemaster-ldns-perl"
+export PIKA_PACKAGE_VERSION="1.5.1-1"
+export PIKA_PACKAGE_NAME="protobuf-c"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"