diff --git a/meson.build b/meson.build
index 96c272a68..d3e08af43 100644
--- a/meson.build
+++ b/meson.build
@@ -71,7 +71,9 @@ warning_flags = [
   '-Wformat-signedness',
   '-Wignored-qualifiers',
   '-Wimplicit-function-declaration',
+  '-Wimplicit-int',
   '-Winit-self',
+  '-Wint-conversion',
   '-Wlogical-op',
   '-Wmaybe-uninitialized',
   '-Wmissing-declarations',