diff --git a/.gitignore b/.gitignore
index a54510b..3bd40f1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -220,3 +220,6 @@ compile_commands.json
 
 # Ignore Bzlmod lock file until it is more stable
 MODULE.bazel.lock
+
+# Chromium: this directory contains some large files that we don't use.
+compatibility/