diff --git a/WebSockets.sln b/WebSockets.sln
index 4ed91db448..6977d2812e 100644
--- a/WebSockets.sln
+++ b/WebSockets.sln
@@ -1,7 +1,7 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
 VisualStudioVersion = 15.0.26730.10
-MinimumVisualStudioVersion = 10.0.40219.1
+MinimumVisualStudioVersion = 15.0.26730.03
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{2C7947A5-9FBD-4267-97C1-2D726D7B3BAF}"
 	ProjectSection(SolutionItems) = preProject
 		src\Directory.Build.props = src\Directory.Build.props