diff --git a/spell/en.utf-8.add b/spell/en.utf-8.add
index ef6766d..7803e2c 100644
--- a/spell/en.utf-8.add
+++ b/spell/en.utf-8.add
@@ -381,3 +381,5 @@ ustc
 PyTorch
 maxcdn
 torchvision
+FFmpeg
+pyav