diff --git a/.travis.yml b/.travis.yml
index 59d92155..65e69403 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,6 @@
 language: php
 
 php:
-  - 5.3
   - 5.4
   - 5.5.9
   - 5.5
@@ -18,7 +17,7 @@ env:
 before_install: true
 
 install:
-  - wget http://ftp.gnu.org/gnu/parallel/parallel-20120522.tar.bz2
+  - wget http://ftp.gnu.org/gnu/parallel/parallel-20170822.tar.bz2
   - tar -xvjf parallel*
   - cd parallel*
   - ./configure