diff --git a/CI/travis.osx.install.deps.sh b/CI/travis.osx.install.deps.sh
index c6621b735..44d099a6e 100755
--- a/CI/travis.osx.install.deps.sh
+++ b/CI/travis.osx.install.deps.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 set -ev
 
-MONO_VER=3.6.0
+MONO_VER=4.0.3
 
 brew update
 which cmake || brew install cmake
diff --git a/nuget.config b/nuget.config
new file mode 100644
index 000000000..637d4e2f2
--- /dev/null
+++ b/nuget.config
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <add key="LibGit2Sharp Internal" value="Lib\NativeBinaries" />
+  </packageSources>
+</configuration>