diff --git a/.gitignore b/.gitignore
index f90db3cf6f..fcf982c8df 100644
--- a/.gitignore
+++ b/.gitignore
@@ -109,3 +109,6 @@ src/systemcmds/topic_listener/listener_generated.cpp
 # colcon
 log/
 keys/
+
+# metadata
+_emscripten_sdk/