diff --git a/.travis.yml b/.travis.yml
index 91f3087..96968ad 100755
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,9 +12,12 @@ matrix:
       sudo: true
 before_install:
   - sudo apt-get install python-tk python3-tk ghostscript
+addons:
+  apt:
+    update: true
 install:
   - pip install ".[dev]"
 script:
   - pytest --verbose --cov-config .coveragerc --cov-report term --cov-report xml --cov=camelot tests
 after_success:
-  - codecov --verbose
\ No newline at end of file
+  - codecov --verbose