diff --git a/.DS_Store b/.DS_Store
deleted file mode 100644
index 2e215a5df..000000000
Binary files a/.DS_Store and /dev/null differ
diff --git a/.gitignore b/.gitignore
index 123367688..726f336d1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
+.DS_Store
 lectures/_build
 */.ipynb_checkpoints/
\ No newline at end of file
diff --git a/lectures/.DS_Store b/lectures/.DS_Store
deleted file mode 100644
index 76449910b..000000000
Binary files a/lectures/.DS_Store and /dev/null differ