diff --git a/appveyor.yml b/appveyor.yml
index c4d4b1983..131771a5a 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -26,8 +26,6 @@ before_build:
 
     dotnet --info
 
-    nuget sources update -Name nuget.org -Source https://api.nuget.org/v3/index.json
-
     dotnet restore
 build_script:
 - ps: >-
diff --git a/nuget.config b/nuget.config
new file mode 100644
index 000000000..5884f5915
--- /dev/null
+++ b/nuget.config
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+ <packageSources>
+    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" /> <!-- As a workaround until https://github.com/appveyor/ci/issues/1869 is fixed -->
+ </packageSources>
+</configuration>