diff --git a/.gitignore b/.gitignore
index 5c3e7e94e6..4d642845db 100644
--- a/.gitignore
+++ b/.gitignore
@@ -56,6 +56,7 @@
 /third_party/libyuv
 /third_party/llvm-build
 /third_party/oauth2
+/third_party/opus/source
 /third_party/protobuf
 /third_party/valgrind
 /third_party/yasm