diff --git a/windows/nglib.sln b/windows/nglib.sln
index 138b1014..8cd31b82 100644
--- a/windows/nglib.sln
+++ b/windows/nglib.sln
@@ -1,6 +1,6 @@
 
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 2012
+Microsoft Visual Studio Solution File, Format Version 13.00
+# Visual Studio 2013
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "nglib", "nglib.vcxproj", "{2E260C8C-595C-442A-A962-51AC06EF8143}"
 EndProject
 Global