diff --git a/meson.build b/meson.build
index d89e0d3..6ddb607 100644
--- a/meson.build
+++ b/meson.build
@@ -4,7 +4,7 @@ project(
   license: 'MIT',
   meson_version: '>=0.56',
   default_options: [
-    'c_std=gnu99',
+    'c_std=c11',
     # turn off asserts etc. in release mode
     'b_ndebug=if-release'
   ]