diff --git a/meson.build b/meson.build
index 06299618..1cb40ade 100644
--- a/meson.build
+++ b/meson.build
@@ -12,6 +12,7 @@ project(
 add_project_arguments('-Wno-unused-parameter', language: 'c')
 add_project_arguments('-Wno-unused-function', language: 'c')
 add_project_arguments('-Wno-unused-result', language: 'c')
+add_project_arguments('-DWLR_USE_UNSTABLE', language: 'c')
 
 cc = meson.get_compiler('c')