diff --git a/.travis.yml b/.travis.yml
index 6a2963f..93ad47c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,6 +5,7 @@ virtualenv:
   system_site_packages: true
 before_install:
   - "cd python"
+  - "sudo apt-get update"
   - "sudo apt-get install -qq python-scipy python-numpy python-psycopg2"
 install: "pip install -r requirements.txt"
 script: "trial smap"