diff --git a/tools/tsan.supp b/tools/tsan.supp
index 31ba259df8..179adc9b4a 100644
--- a/tools/tsan.supp
+++ b/tools/tsan.supp
@@ -41,6 +41,8 @@ race:SkImageFilter::filterImage
 race:SkPathRef::computeBounds
 
 # SkMatrix caches a type mask.  If we race on this, we'll just calculate the same thing a few times.
+race:SkMatrix::getType
+race:SkMatrix::rectStaysRect
 race:SkMatrix::getPerspectiveTypeMaskOnly
 
 # TODO: some sort of SkRacy<T> to handle cases like SkMatrix, SkPathRef, SkPixelRef above?