diff --git a/CSharp.gitignore b/CSharp.gitignore
index 99120852..5137f352 100644
--- a/CSharp.gitignore
+++ b/CSharp.gitignore
@@ -85,6 +85,9 @@ packages
 csx
 *.build.csdef
 
+# Windows
+Thumbs.db
+
 # Others
 [Bb]in
 [Oo]bj