diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index c9dadd8db..7fbb720fa 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="4.5.10-dmo1"
-export PIKA_PACKAGE_NAME="ffhevc-dmo"
+export PIKA_PACKAGE_VERSION="4.2.9-dmo1"
+export PIKA_PACKAGE_NAME="ffx264-dmo"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"