diff --git a/.travis.prepare.sh b/.travis.prepare.sh
old mode 100644
new mode 100755
diff --git a/.travis.yml b/.travis.yml
index 32391d8..3b05233 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,2 +1,2 @@
 language: haskell
-before_install: ./travis.prepare.sh
+before_install: sh .travis.prepare.sh