diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index acd7261b6..647a7a3fe 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="7.222-3"
-export PIKA_PACKAGE_NAME="fonts-montserrat"
+export PIKA_PACKAGE_VERSION="278"
+export PIKA_PACKAGE_NAME="diffoscope"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"