diff --git a/appveyor.yml b/appveyor.yml
index 0bd33a6641..04e53ab0ce 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,7 +1,7 @@
 environment:
   VisualStudioVersion: 12.0
 
-version: 49.0.0-CI{build}
+version: 51.0.0-CI{build}
   
 shallow_clone: true