diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 2482d6cbe..b7670cc00 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="5.5.2-1"
-export PIKA_PACKAGE_NAME="flask-security"
+export PIKA_PACKAGE_VERSION="4.16.2+ds-1"
+export PIKA_PACKAGE_NAME="gtk4"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"