diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 42ac5b9ce..ee8041e14 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="20250201-1"
-export PIKA_PACKAGE_NAME="papirus-icon-theme"
+export PIKA_PACKAGE_VERSION="2019.2.0~git20210419.7d418fa-6"
+export PIKA_PACKAGE_NAME="fiat"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"