diff --git a/meson.build b/meson.build
index 10654de..4297de6 100644
--- a/meson.build
+++ b/meson.build
@@ -14,6 +14,7 @@ project(
 )
 
 add_project_arguments('-Wno-unused-parameter', language: 'c')
+add_project_arguments('-DWLR_USE_UNSTABLE', language: 'c')
 
 cc = meson.get_compiler('c')