diff --git a/.travis.yml b/.travis.yml
index 8507f64..9e0060f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,7 @@ elixir:
 install:
   - sudo apt-get update
   - sudo apt-get install nodejs npm
-  - npm install -g ganache-cli
+  - npm install -g ganache-cli@6.1.3
   - mix local.rebar --force # for Elixir 1.3.0 and up
   - mix local.hex --force
   - mix deps.get
diff --git a/travis_test.sh b/travis_test.sh
old mode 100644
new mode 100755