diff --git a/.gitignore b/.gitignore
index 79c7575b4..c533574c7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -137,3 +137,9 @@ dmypy.json
 
 # Cython debug symbols
 cython_debug/
+
+# macOS system files
+*.DS_Store
+
+# Process ID files
+*.pid