diff --git a/.travis.yml b/.travis.yml
index 5340e01..132ae61 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,5 +2,8 @@ language: csharp
 
 sudo: false  # use the new container-based Travis infrastructure 
 
+before_install:
+ - chmod +x build.sh
+ 
 script: 
   - ./build.sh All