diff --git a/.gitignore b/.gitignore
index eff902581..399419fa4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,3 +25,6 @@
 /trunk/research/api-server/static-dir/forward
 /trunk/research/api-server/static-dir/live
 /trunk/research/api-server/static-dir/players
+
+# Apple-specific garbage files.
+.AppleDouble