diff --git a/Microsoft.Bot.Builder.sln b/Microsoft.Bot.Builder.sln
index 5e5eaa1ab..45b886e2d 100644
--- a/Microsoft.Bot.Builder.sln
+++ b/Microsoft.Bot.Builder.sln
@@ -1,6 +1,6 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.27130.2010
+VisualStudioVersion = 15.0.26730.12
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Libraries", "Libraries", "{4269F3C3-6B42-419B-B64A-3E6DC0F1574A}"
 EndProject