diff --git a/.travis.yml b/.travis.yml
index c5631b3af9..b2cc122e1a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,8 +14,7 @@ env:
   global:
     - DOTNET_SKIP_FIRST_TIME_EXPERIENCE: true
     - DOTNET_CLI_TELEMETRY_OPTOUT: 1
-mono:
-  - 4.0.5
+mono: none
 python:
   - "2.7"
 os: