diff --git a/VisualStudio.gitignore b/VisualStudio.gitignore
index b2480836..62e4e8f2 100644
--- a/VisualStudio.gitignore
+++ b/VisualStudio.gitignore
@@ -347,3 +347,6 @@ healthchecksdb
 
 # Backup folder for Package Reference Convert tool in Visual Studio 2017
 MigrationBackup/
+
+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/