Explicitly choose Mono 4.0.5

- avoids future problems related to aspnet/External#48 - e.g. when Travis updates default Mono version in `csharp` bundle
aspnet · Nov 17, 2015 · f6616db · f6616db
1 parent cef221f
commit f6616db
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/.travis.yml b/.travis.yml
@@ -1,4 +1,6 @@
 language: csharp
 sudo: false
+mono:
+  - 4.0.5
 script:
   - ./build.sh --quiet verify