diff --git a/.gitignore b/.gitignore
index ed6d1d2..a5d06d1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -400,3 +400,6 @@ FodyWeavers.xsd
 # JetBrains Rider
 *.sln.iml
 
+# Windows reserved filename that can break git add on Windows
+CON
+