diff --git a/include/rapidjson/internal/regex.h b/include/rapidjson/internal/regex.h
index 5c82fb4..8da60f6 100644
--- a/include/rapidjson/internal/regex.h
+++ b/include/rapidjson/internal/regex.h
@@ -22,6 +22,7 @@
 RAPIDJSON_DIAG_PUSH
 RAPIDJSON_DIAG_OFF(padded)
 RAPIDJSON_DIAG_OFF(switch-enum)
+RAPIDJSON_DIAG_OFF(implicit-fallthrough)
 #endif
 
 #ifndef RAPIDJSON_REGEX_VERBOSE