diff --git a/deps/agg/src/agg_pixfmt_rgba.cpp b/deps/agg/src/agg_pixfmt_rgba.cpp
index 05b8734d5..45e0b19b8 100644
--- a/deps/agg/src/agg_pixfmt_rgba.cpp
+++ b/deps/agg/src/agg_pixfmt_rgba.cpp
@@ -6,6 +6,9 @@
 #pragma GCC diagnostic ignored "-Wunused-parameter"
 #pragma GCC diagnostic ignored "-Wc++11-narrowing"
 #pragma GCC diagnostic ignored "-Wunused-local-typedef"
+#pragma GCC diagnostic ignored "-Wshadow"
+#pragma GCC diagnostic ignored "-Wsign-conversion"
+#pragma GCC diagnostic ignored "-Wconversion"
 #include <boost/gil/gil_all.hpp>
 #include <boost/gil/extension/toolbox/hsv.hpp>
 #include <boost/gil/extension/toolbox/hsl.hpp>