diff --git a/.gitignore b/.gitignore
index 67a6788f..c98ea617 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,4 @@ cmake-build
 src/celestia/win32/res/resource_strings.cpp
 src/celestia/qt/rc.cpp
 data/*.cpp
+.DS_Store