[travis] install dejagnu with sudo
diff --git a/.travis.yml b/.travis.yml
index ffc43a5..1a6a425 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,6 @@ compiler:
- gcc
- clang
-before_script: apt-get install dejagnu
+before_script: sudo apt-get install dejagnu
script: ./configure && make && make check