diff --git a/meson.build b/meson.build
index 53c885b3..55f5abc0 100644
--- a/meson.build
+++ b/meson.build
@@ -176,7 +176,10 @@ cc_warning_flags_test = [
   '-Wsequence-point',
   '-Wshadow',
   '-Wwrite-strings',
+  '-Werror=implicit-int',
   '-Werror=implicit-function-declaration',
+  '-Werror=int-conversion',
+  '-Werror=incompatible-function-pointer-types',
   ]
 cc_warning_flags = cc.get_supported_arguments(cc_warning_flags_test)
 cc_flags = [cc_debug_flags, cc_os_flags, cc_warning_flags]