diff --git a/tools/ports/icu.py b/tools/ports/icu.py
index 0cd4de23ccc2b..530122f3e18c2 100644
--- a/tools/ports/icu.py
+++ b/tools/ports/icu.py
@@ -39,6 +39,8 @@ def build_lib(lib_output, lib_src, other_includes, build_flags):
         # TODO: investigate why this is needed and remove
         '-Wno-macro-redefined',
         '-Wno-deprecated-declarations',
+        '-Wno-array-compare',
+        '-Wno-unknown-warning-option',
         # usage of 'using namespace icu' is deprecated: icu v61
         '-DU_USING_ICU_NAMESPACE=0',
         # make explicit inclusion of utf header: ref utf.h