diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 5769d694e..0df54c620 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="4:24.12.0-2"
-export PIKA_PACKAGE_NAME="libksieve"
+export PIKA_PACKAGE_VERSION="4.20.0-1"
+export PIKA_PACKAGE_NAME="libxfce4windowing"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"