diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index de46c8bdb..ce9bad70a 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.0.4-1"
-export PIKA_PACKAGE_NAME="rust-pem"
+export PIKA_PACKAGE_VERSION="5.3.1.2-1"
+export PIKA_PACKAGE_NAME="haskell-lambdabot-reference-plugins"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"