diff --git a/ClosedXML.sln b/ClosedXML.sln
index 4104ff4..30f8a6b 100644
--- a/ClosedXML.sln
+++ b/ClosedXML.sln
@@ -7,6 +7,7 @@
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{5C94E22C-85AA-48FD-B082-CF929FFC6C31}"
 	ProjectSection(SolutionItems) = preProject
+		appveyor.yml = appveyor.yml
 		ClosedXML.vsmdi = ClosedXML.vsmdi
 	EndProjectSection
 EndProject