diff --git a/appveyor.yml b/appveyor.yml
index 453887c..9b9f4e0 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -36,6 +36,7 @@
 
 #Restore
 before_build:
+  - cmd: nuget sources add -name OpenXML-MyGet -Source https://dotnet.myget.org/F/open-xml-sdk/api/v3/index.json
   - nuget restore
 
 artifacts: