diff --git a/.gitignore b/.gitignore
index 0239f5075..716fd810f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,3 +25,5 @@ locales/firefox-l10n/
 
 !src/toolkit/themes/shared/design-system/dist/
 .DS_Store
+
+mozconfig