diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 3cc70da8e..b5dcfa640 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="0.5.2-1"
-export PIKA_PACKAGE_NAME="rust-actix-codec"
+export PIKA_PACKAGE_VERSION="4.0.5.3140.ds6-11"
+export PIKA_PACKAGE_NAME="firebird4.0"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"