diff --git a/meson.build b/meson.build
index 3dd95b8..8e93075 100644
--- a/meson.build
+++ b/meson.build
@@ -2,7 +2,7 @@ project('yambar', 'c',
         version: '1.4.0',
         license: 'MIT',
         meson_version: '>=0.53.0',
-        default_options: ['c_std=c11',
+        default_options: ['c_std=c18',
                           'warning_level=1',
                           'werror=true',
                           'b_ndebug=if-release'])