diff --git a/.gitignore b/.gitignore
index af2ca7b0a..2b592bb31 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,6 @@ __pycache__/
 # Ignore certificate files.
 *.pem
 *.crt
+
+# Ignore OS bookkeeping files
+.DS_Store