diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index c4ae970d1..fc1c27e8f 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="3.4.0-1"
-export PIKA_PACKAGE_NAME="radicale"
+export PIKA_PACKAGE_VERSION="2.0.96-1"
+export PIKA_PACKAGE_NAME="rust-syn"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"