diff --git a/CSharp.gitignore b/CSharp.gitignore
index 991208520ac88b113c42bced121d43842c7cf51b..bdc3535f745bc86966fb24c67d252c3ea68e8e03 100644
--- a/CSharp.gitignore
+++ b/CSharp.gitignore
@@ -85,6 +85,9 @@ packages
 csx
 *.build.csdef
 
+# Windows Store app package directory
+AppPackages/
+
 # Others
 [Bb]in
 [Oo]bj