diff --git a/VisualStudio.gitignore b/VisualStudio.gitignore
index be1f1dc7..a673f927 100644
--- a/VisualStudio.gitignore
+++ b/VisualStudio.gitignore
@@ -342,3 +342,6 @@ healthchecksdb
 
 # Backup folder for Package Reference Convert tool in Visual Studio 2017
 MigrationBackup/
+
+# Visual Studio CMake default build directory
+out/